diff --git a/pyproject.toml b/pyproject.toml
index d5863fc6..3877f9aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,10 @@ dependencies = [
   "aiida-core>=2.5",
   "termcolor",
   "pygraphviz",
-  "lxml"
+  "lxml",
+  "aiida-core~=2.5",
+  "aiida-workgraph==0.3.14",
+  "node_graph==0.0.11",
 ]
 license = {file = "LICENSE"}
 
diff --git a/src/sirocco/core/graph_items.py b/src/sirocco/core/graph_items.py
index 0bed3d87..807018d2 100644
--- a/src/sirocco/core/graph_items.py
+++ b/src/sirocco/core/graph_items.py
@@ -2,6 +2,7 @@
 
 from dataclasses import dataclass, field
 from itertools import chain, product
+from pathlib import Path
 from typing import TYPE_CHECKING, Any, ClassVar, Self
 
 from sirocco.parsing._yaml_data_models import (
diff --git a/src/sirocco/parsing/_yaml_data_models.py b/src/sirocco/parsing/_yaml_data_models.py
index 976f7fa7..1f10c6c9 100644
--- a/src/sirocco/parsing/_yaml_data_models.py
+++ b/src/sirocco/parsing/_yaml_data_models.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import time
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from datetime import datetime
 from pathlib import Path
 from typing import Annotated, Any, ClassVar, Literal
@@ -82,43 +82,6 @@ def convert_datetime(cls, value) -> datetime:
         return datetime.fromisoformat(value)
 
 
-class _CliArgsBaseModel(BaseModel):
-    """Base class for cli_arguments specifications"""
-
-    # TODO: Even allow for `str`, or always require list?
-    positional: str | list[str] | None = None
-    # Field needed for child class doing pydantic parsing
-    keyword: dict[str, str] | None = Field(default_factory=dict)
-    flags: str | list[str] | None = None
-    source_file: str | list[str] | None = None
-
-    # TODO: Should we allow users to pass it without the hyphen(s), and prepend them automatically?
-    # TODO: While convenient, it could be a bad idea, if users put in wrong things. Better to be explicit.
-    @field_validator("keyword", mode="before")
-    @classmethod
-    def validate_keyword_args(cls, value):
-        """Ensure keyword arguments start with '-' or '--'."""
-        if value is not None:
-            invalid_keys = [key for key in value if not key.startswith(("-", "--"))]
-            if invalid_keys:
-                invalid_kwarg_exc = f"Invalid keyword arguments: {', '.join(invalid_keys)}"
-                raise ValueError(invalid_kwarg_exc)
-        return value
-
-    @field_validator("flags", mode="before")
-    @classmethod
-    def validate_flag_args(cls, value):
-        """Ensure positional arguments start with '-' or '--'."""
-        if value is not None:
-            if isinstance(value, str):
-                value = [value]
-            invalid_flags = [arg for arg in value if not arg.startswith(("-", "--"))]
-            if invalid_flags:
-                invalid_flags_exc = f"Invalid positional arguments: {', '.join(invalid_flags)}"
-                raise ValueError(invalid_flags_exc)
-        return value
-
-
 class TargetNodesBaseModel(_NamedBaseModel):
     """class for targeting other task or data nodes in the graph
 
@@ -310,12 +273,14 @@ class ConfigRootTask(ConfigBaseTask):
 class ConfigShellTaskSpecs:
     plugin: ClassVar[Literal["shell"]] = "shell"
     command: str = ""
-    cli_arguments: _CliArgsBaseModel | None = None
+    cli_arguments: str = ""
+    env_source_files: str | list[str] = field(default_factory=list)
     src: str | None = None
 
 
 class ConfigShellTask(ConfigBaseTask, ConfigShellTaskSpecs):
-    pass
+    command: str = ""
+    env_source_files: str | list[str] = Field(default_factory=list)
 
 
 @dataclass
@@ -341,6 +306,9 @@ class ConfigBaseData(_NamedBaseModel, ConfigBaseDataSpecs):
     """
 
     parameters: list[str] = []
+    type: str | None = None
+    src: str | None = None
+    format: str | None = None
 
     @field_validator("type")
     @classmethod
diff --git a/src/sirocco/workgraph.py b/src/sirocco/workgraph.py
new file mode 100644
index 00000000..8d1e52fe
--- /dev/null
+++ b/src/sirocco/workgraph.py
@@ -0,0 +1,356 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import TYPE_CHECKING, Any
+
+import aiida.common
+import aiida.orm
+import aiida_workgraph.engine.utils  # type: ignore[import-untyped]
+from aiida_workgraph import WorkGraph
+
+from sirocco.core._tasks.icon_task import IconTask
+from sirocco.core._tasks.shell_task import ShellTask
+
+if TYPE_CHECKING:
+    from aiida_workgraph.socket import TaskSocket  # type: ignore[import-untyped]
+
+    from sirocco import core
+    from sirocco.core import graph_items
+
+
+# This is hack to aiida-workgraph, merging this into aiida-workgraph properly would require
+# some major refactor see issue https://github.com/aiidateam/aiida-workgraph/issues/168
+# It might be better to give up on the graph like construction and just create the task
+# directly with inputs, arguments and outputs
+def _prepare_for_shell_task(task: dict, kwargs: dict) -> dict:
+    """Prepare the inputs for ShellTask"""
+    from aiida.common import lang
+    from aiida.orm import AbstractCode
+    from aiida_shell.launch import convert_nodes_single_file_data, prepare_code
+
+    command = kwargs.pop("command", None)
+    resolve_command = kwargs.pop("resolve_command", False)
+    metadata = kwargs.pop("metadata", {})
+    # setup code
+    if isinstance(command, str):
+        computer = (metadata or {}).get("options", {}).pop("computer", None)
+        code = prepare_code(command, computer, resolve_command)
+    else:
+        lang.type_check(command, AbstractCode)
+        code = command
+    # update the tasks with links
+    nodes = convert_nodes_single_file_data(kwargs.pop("nodes", {}))
+    # find all keys in kwargs start with "nodes."
+    for key in list(kwargs.keys()):
+        if key.startswith("nodes."):
+            nodes[key[6:]] = kwargs.pop(key)
+    metadata.update({"call_link_label": task["name"]})
+
+    default_outputs = {"remote_folder", "remote_stash", "retrieved", "_outputs", "_wait", "stdout", "stderr"}
+    task_outputs = {task["outputs"][i]["name"] for i in range(len(task["outputs"]))}
+    task_outputs = task_outputs.union(set(kwargs.pop("outputs", [])))
+    missing_outputs = task_outputs.difference(default_outputs)
+    return {
+        "code": code,
+        "nodes": nodes,
+        "filenames": kwargs.pop("filenames", {}),
+        "arguments": kwargs.pop("arguments", []),
+        "outputs": list(missing_outputs),
+        "parser": kwargs.pop("parser", None),
+        "metadata": metadata or {},
+    }
+
+
+aiida_workgraph.engine.utils.prepare_for_shell_task = _prepare_for_shell_task
+
+
+class AiidaWorkGraph:
+    def __init__(self, core_workflow: core.Workflow):
+        # the core workflow that unrolled the time constraints for the whole graph
+        self._core_workflow = core_workflow
+
+        self._validate_workflow()
+
+        self._workgraph = WorkGraph(core_workflow.name)
+
+        # stores the input data available on initialization
+        self._aiida_data_nodes: dict[str, aiida_workgraph.orm.Data] = {}
+        # stores the outputs sockets of tasks
+        self._aiida_socket_nodes: dict[str, TaskSocket] = {}
+        self._aiida_task_nodes: dict[str, aiida_workgraph.Task] = {}
+
+        self._add_available_data()
+        self._add_tasks()
+
+    def _validate_workflow(self):
+        """Checks if the core workflow uses for its cycles, tasks and data valid names for AiiDA."""
+        for cycle in self._core_workflow.cycles:
+            try:
+                aiida.common.validate_link_label(cycle.name)
+            except ValueError as exception:
+                msg = f"Raised error when validating cycle name '{cycle.name}': {exception.args[0]}"
+                raise ValueError(msg) from exception
+            for task in cycle.tasks:
+                try:
+                    aiida.common.validate_link_label(task.name)
+                except ValueError as exception:
+                    msg = f"Raised error when validating task name '{cycle.name}': {exception.args[0]}"
+                    raise ValueError(msg) from exception
+                for input_ in task.inputs:
+                    try:
+                        aiida.common.validate_link_label(input_.name)
+                    except ValueError as exception:
+                        msg = f"Raised error when validating input name '{input_.name}': {exception.args[0]}"
+                        raise ValueError(msg) from exception
+                for output in task.outputs:
+                    try:
+                        aiida.common.validate_link_label(output.name)
+                    except ValueError as exception:
+                        msg = f"Raised error when validating output name '{output.name}': {exception.args[0]}"
+                        raise ValueError(msg) from exception
+
+    def _add_available_data(self):
+        """Adds the available data on initialization to the workgraph"""
+        for cycle in self._core_workflow.cycles:
+            for task in cycle.tasks:
+                for input_ in task.inputs:
+                    if input_.available:
+                        self._add_aiida_input_data_node(task, input_)
+
+    @staticmethod
+    def replace_invalid_chars_in_label(label: str) -> str:
+        """Replaces chars in the label that are invalid for AiiDA.
+
+        The invalid chars ["-", " ", ":", "."] are replaced with underscores.
+        """
+        invalid_chars = ["-", " ", ":", "."]
+        for invalid_char in invalid_chars:
+            label = label.replace(invalid_char, "_")
+        return label
+
+    @staticmethod
+    def get_aiida_label_from_graph_item(obj: graph_items.GraphItem) -> str:
+        """Returns a unique AiiDA label for the given graph item.
+
+        The graph item object is uniquely determined by its name and its coordinates. There is the possibility that
+        through the replacement of invalid chars in the coordinates duplication can happen but it is unlikely.
+        """
+        return AiidaWorkGraph.replace_invalid_chars_in_label(
+            f"{obj.name}" + "__".join(f"_{key}_{value}" for key, value in obj.coordinates.items())
+        )
+
+    def _add_aiida_input_data_node(self, task: graph_items.Task, input_: graph_items.Data):
+        """
+        Create an `aiida.orm.Data` instance from the provided graph item.
+        """
+        label = AiidaWorkGraph.get_aiida_label_from_graph_item(input_)
+        input_path = Path(input_.src)
+        input_full_path = input_.src if input_path.is_absolute() else task.config_rootdir / input_path
+
+        if input_.type == "file":
+            self._aiida_data_nodes[label] = aiida.orm.SinglefileData(label=label, file=input_full_path)
+        elif input_.type == "dir":
+            self._aiida_data_nodes[label] = aiida.orm.FolderData(label=label, tree=input_full_path)
+        else:
+            msg = f"Data type {input_.type!r} not supported. Please use 'file' or 'dir'."
+            raise ValueError(msg)
+
+    def _add_tasks(self):
+        """Creates the AiiDA task nodes from the `GraphItem.Task`s in the cycles.
+
+        This includes the linking of all input and output nodes, the arguments and wait_on tasks
+        """
+        for cycle in self._core_workflow.cycles:
+            for task in cycle.tasks:
+                self._create_task_node(task)
+
+        # NOTE: The wait on tasks has to be added after the creation of the tasks because it might reference tasks from
+        # the future
+        for cycle in self._core_workflow.cycles:
+            for task in cycle.tasks:
+                self._link_wait_on_to_task(task)
+
+        for cycle in self._core_workflow.cycles:
+            for task in cycle.tasks:
+                for input_ in task.inputs:
+                    self._link_input_nodes_to_task(task, input_)
+                self._link_arguments_to_task(task)
+                for output in task.outputs:
+                    self._link_output_nodes_to_task(task, output)
+
+    def _create_task_node(self, task: graph_items.Task):
+        label = AiidaWorkGraph.get_aiida_label_from_graph_item(task)
+        if isinstance(task, ShellTask):
+            command_path = Path(task.command)
+            command_full_path = task.command if command_path.is_absolute() else task.config_rootdir / command_path
+            command = str(command_full_path)
+
+            # Source file
+            env_source_files = task.env_source_files
+            env_source_files = [env_source_files] if isinstance(env_source_files, str) else env_source_files
+            prepend_text = "\n".join([f"source {env_source_file}" for env_source_file in env_source_files])
+
+            # NOTE: We don't pass the `nodes` dictionary here, as then we would need to have the sockets available when
+            # we create the task. Instead, they are being updated via the WG internals when linking inputs/outputs to
+            # tasks
+            workgraph_task = self._workgraph.tasks.new(
+                "ShellJob",
+                name=label,
+                command=command,
+                arguments=[],
+                metadata={"options": {"prepend_text": prepend_text}},
+            )
+
+            self._aiida_task_nodes[label] = workgraph_task
+
+        elif isinstance(task, IconTask):
+            exc = "IconTask not implemented yet."
+            raise NotImplementedError(exc)
+        else:
+            exc = f"Task: {task.name} not implemented yet."
+            raise NotImplementedError(exc)
+
+    def _link_wait_on_to_task(self, task: graph_items.Task):
+        label = AiidaWorkGraph.get_aiida_label_from_graph_item(task)
+        workgraph_task = self._aiida_task_nodes[label]
+        wait_on_tasks = []
+        for wait_on in task.wait_on:
+            wait_on_task_label = AiidaWorkGraph.get_aiida_label_from_graph_item(wait_on)
+            wait_on_tasks.append(self._aiida_task_nodes[wait_on_task_label])
+        workgraph_task.wait = wait_on_tasks
+
+    def _link_input_nodes_to_task(self, task: graph_items.Task, input_: graph_items.Data):
+        """Links the input to the workgraph task."""
+        task_label = AiidaWorkGraph.get_aiida_label_from_graph_item(task)
+        input_label = AiidaWorkGraph.get_aiida_label_from_graph_item(input_)
+        workgraph_task = self._aiida_task_nodes[task_label]
+        workgraph_task.inputs.new("Any", f"nodes.{input_label}")
+        workgraph_task.kwargs.append(f"nodes.{input_label}")
+
+        # resolve data
+        if (data_node := self._aiida_data_nodes.get(input_label)) is not None:
+            if (nodes := workgraph_task.inputs.get("nodes")) is None:
+                msg = (
+                    f"Workgraph task {workgraph_task.name!r} did not initialize input nodes in the workgraph "
+                    f"before linking. This is a bug in the code, please contact the developers by making an issue."
+                )
+                raise ValueError(msg)
+            nodes.value.update({f"{input_label}": data_node})
+        elif (output_socket := self._aiida_socket_nodes.get(input_label)) is not None:
+            self._workgraph.links.new(output_socket, workgraph_task.inputs[f"nodes.{input_label}"])
+        else:
+            msg = (
+                f"Input data node {input_label!r} was neither found in socket nodes nor in data nodes. The task "
+                f"{task_label!r} must have dependencies on inputs before they are created."
+            )
+            raise ValueError(msg)
+
+    def _link_arguments_to_task(self, task: graph_items.Task):
+        """Links the arguments to the workgraph task.
+
+        Parses `cli_arguments` of the graph item task and links all arguments to the task node. It only adds arguments
+        corresponding to inputs if they are contained in the task.
+        """
+        task_label = AiidaWorkGraph.get_aiida_label_from_graph_item(task)
+        workgraph_task = self._aiida_task_nodes[task_label]
+        if (workgraph_task_arguments := workgraph_task.inputs.get("arguments")) is None:
+            msg = (
+                f"Workgraph task {workgraph_task.name!r} did not initialize arguments nodes in the workgraph "
+                f"before linking. This is a bug in the code, please contact developers."
+            )
+            raise ValueError(msg)
+
+        name_to_input_map = {input_.name: input_ for input_ in task.inputs}
+        # we track the linked input arguments, to ensure that all linked input nodes got linked arguments
+        linked_input_args = []
+
+        len_arg_with_option = 2
+        len_arg_no_option = 1
+        for arg in self._split_cli_arguments(task.cli_arguments):
+            if arg.startswith("{") and arg.endswith("}"):
+                # remove curly brackets
+                # "{--init file}" -> "--init file"
+                arg_wrapped = arg[1:-1]
+                # "--init file" -> ["--init", "file"]
+                input_arg = arg_wrapped.split()
+                if len(input_arg) != len_arg_with_option and len(input_arg) != len_arg_no_option:
+                    msg = f"Expected argument of format {{data}} or {{option data}} but found {arg}"
+                    raise ValueError(msg)
+                arg_name = input_arg[0] if len(input_arg) == len_arg_no_option else input_arg[1]
+                # We only add an input argument to the args if it has been added to the nodes
+                # This ensures that inputs and their arguments are only added
+                # when the time conditions are fulfilled
+                if (input_ := name_to_input_map.get(arg_name)) is not None:
+                    input_label = AiidaWorkGraph.get_aiida_label_from_graph_item(input_)
+
+                    arg_option = input_arg[0] if len(input_arg) == len_arg_with_option else None
+                    if arg_option is not None:
+                        workgraph_task_arguments.value.append(f"{arg_option}")
+                    workgraph_task_arguments.value.append(f"{{{input_label}}}")
+                    linked_input_args.append(input_.name)
+            else:
+                workgraph_task_arguments.value.append(f"{arg}")
+        # Adding remaining input nodes as positional arguments
+        for input_name in name_to_input_map:
+            if input_name not in linked_input_args:
+                input_ = name_to_input_map[input_name]
+                input_label = AiidaWorkGraph.get_aiida_label_from_graph_item(input_)
+                workgraph_task_arguments.value.append(f"{{{input_label}}}")
+
+    def _split_cli_arguments(self, cli_arguments: str) -> list[str]:
+        """Splits the CLI arguments into a list of separate entities.
+
+        Splits the CLI arguments by whitespaces except if the whitespace is contained within curly brackets. For example
+        the string
+        "-D --CMAKE_CXX_COMPILER=${CXX_COMPILER} {--init file}"
+        will be splitted into by this function
+        ["-D", "--CMAKE_CXX_COMPILER=${CXX_COMPILER}", "{--init file}"]
+        """
+
+        nb_open_curly_brackets = 0
+        last_split_idx = 0
+        splits = []
+        for i, char in enumerate(cli_arguments):
+            if char == " " and not nb_open_curly_brackets:
+                # we ommit the space in the splitting
+                splits.append(cli_arguments[last_split_idx:i])
+                last_split_idx = i + 1
+            elif char == "{":
+                nb_open_curly_brackets += 1
+            elif char == "}":
+                if nb_open_curly_brackets == 0:
+                    msg = "Invalid input for cli_arguments. Found a closing curly bracket before an opening in {cli_argumentss!r}"
+                    raise ValueError(msg)
+                nb_open_curly_brackets -= 1
+
+        if last_split_idx != len(cli_arguments):
+            splits.append(cli_arguments[last_split_idx : len(cli_arguments)])
+
+        return splits
+
+    def _link_output_nodes_to_task(self, task: graph_items.Task, output: graph_items.Data):
+        """
+        task: the task corresponding to the output
+        output: ...
+        """
+        workgraph_task = self._aiida_task_nodes[AiidaWorkGraph.get_aiida_label_from_graph_item(task)]
+        output_label = AiidaWorkGraph.get_aiida_label_from_graph_item(output)
+        output_socket = workgraph_task.outputs.new("Any", output.src)
+        self._aiida_socket_nodes[output_label] = output_socket
+
+    def run(
+        self,
+        inputs: None | dict[str, Any] = None,
+        metadata: None | dict[str, Any] = None,
+    ) -> dict[str, Any]:
+        return self._workgraph.run(inputs=inputs, metadata=metadata)
+
+    def submit(
+        self,
+        *,
+        inputs: None | dict[str, Any] = None,
+        wait: bool = False,
+        timeout: int = 60,
+        metadata: None | dict[str, Any] = None,
+    ) -> dict[str, Any]:
+        return self._workgraph.submit(inputs=inputs, wait=wait, timeout=timeout, metadata=metadata)
diff --git a/tests/cases/large/config/data/dummy_source_file.sh b/tests/cases/large/config/data/dummy_source_file.sh
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/large/config/data/era5 b/tests/cases/large/config/data/era5
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/large/config/data/grid b/tests/cases/large/config/data/grid
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/large/config/data/obs_data b/tests/cases/large/config/data/obs_data
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/large/config/scripts/cleanup.sh b/tests/cases/large/config/scripts/cleanup.sh
new file mode 100755
index 00000000..bc5435d9
--- /dev/null
+++ b/tests/cases/large/config/scripts/cleanup.sh
@@ -0,0 +1 @@
+echo "cleanup" > output
diff --git a/tests/cases/large/config/scripts/extpar b/tests/cases/large/config/scripts/extpar
new file mode 100755
index 00000000..66dc5ac0
--- /dev/null
+++ b/tests/cases/large/config/scripts/extpar
@@ -0,0 +1 @@
+echo "extpar" > output
diff --git a/tests/cases/large/config/scripts/icon b/tests/cases/large/config/scripts/icon
new file mode 100755
index 00000000..ec409b0e
--- /dev/null
+++ b/tests/cases/large/config/scripts/icon
@@ -0,0 +1,4 @@
+echo "icon" > restart
+echo "icon" > output
+echo "icon" > output_1
+echo "icon" > output_2
diff --git a/tests/cases/large/config/scripts/main_script_atm.sh b/tests/cases/large/config/scripts/main_script_atm.sh
new file mode 100755
index 00000000..2a361f83
--- /dev/null
+++ b/tests/cases/large/config/scripts/main_script_atm.sh
@@ -0,0 +1 @@
+echo "main_script_atm.sh" > postout
diff --git a/tests/cases/large/config/scripts/main_script_ocn.sh b/tests/cases/large/config/scripts/main_script_ocn.sh
new file mode 100755
index 00000000..1d01b24c
--- /dev/null
+++ b/tests/cases/large/config/scripts/main_script_ocn.sh
@@ -0,0 +1 @@
+echo "python main_script_ocn.sh" > postout
diff --git a/tests/cases/large/config/scripts/post_clean.sh b/tests/cases/large/config/scripts/post_clean.sh
new file mode 100755
index 00000000..b91319f8
--- /dev/null
+++ b/tests/cases/large/config/scripts/post_clean.sh
@@ -0,0 +1 @@
+echo "store_and_clean" > stored_data
diff --git a/tests/cases/large/config/test_config_large.yml b/tests/cases/large/config/test_config_large.yml
index 05c261b8..ea295f4e 100644
--- a/tests/cases/large/config/test_config_large.yml
+++ b/tests/cases/large/config/test_config_large.yml
@@ -61,12 +61,8 @@ tasks:
       account: g110
   - extpar:
       plugin: shell  # no extpar plugin available yet
-      command: $PWD/examples/files/scripts/extpar
-      cli_arguments:
-        keyword:
-          --input: obs_data
-        flags:
-          - --verbose
+      command: scripts/extpar
+      cli_arguments: "--verbose {--input obs_data}"
       uenv:
         squashfs: path/to/squashfs
         mount_point: runtime/mount/point
@@ -74,26 +70,18 @@ tasks:
       walltime: 00:02:00
   - preproc:
       plugin: shell
-      command: $PWD/examples/files/scripts/cleanup.sh
-      cli_arguments:
-        positional:
-          - grid_file
-        keyword:
-          -p: extpar_file
-          -e: ERA5
-        source_file: dummy_source_file
+      command: scripts/cleanup.sh
+      cli_arguments: "{-p extpar_file} {-e ERA5} {grid_file}"
+      source_file: dummy_source_file
       nodes: 4
       walltime: 00:02:00
       uenv:
         squashfs: path/to/squashfs
         mount_point: runtime/mount/point
   - icon:
-      plugin: icon
-      command: $PWD/examples/files/scripts/icon
-      cli_arguments:
-        keyword:
-          -g: grid_file
-          --input: icon_input
+      plugin: shell 
+      command: scripts/icon
+      cli_arguments: "{-g grid_file} {--input icon_input}"
       nodes: 40
       walltime: 23:59:59
       namelists:
@@ -104,10 +92,8 @@ tasks:
         mount_point: runtime/mount/point
   - postproc_1:
       plugin: shell
-      command: $PWD/examples/files/scripts/main_script_ocn.sh
-      cli_arguments:
-        keyword:
-          --input: stream_1
+      command: scripts/main_script_ocn.sh
+      cli_arguments: "{--input stream_1}"
       nodes: 2
       walltime: 00:05:00
       uenv:
@@ -115,13 +101,8 @@ tasks:
         mount_point: runtime/mount/point
   - postproc_2:
       plugin: shell
-      command: $PWD/examples/files/scripts/main_script_atm.sh
-      cli_arguments:
-        keyword:
-          --input: stream_2
-          # `arg_option` should be in `tasks` section instead
-          # How to implement this? Even needed with keyword-arguments?
-          # arg_option: --input
+      command: scripts/main_script_atm.sh
+      cli_arguments: "{--input stream_2}"
       nodes: 2
       walltime: 00:05:00
       src: path/to/src/dir
@@ -130,36 +111,30 @@ tasks:
         mount_point: runtime/mount/point
   - store_and_clean_1:
       plugin: shell
-      command: $PWD/examples/files/scripts/post_clean.sh
-      cli_arguments:
-        keyword:
-          --input: postout_1
-          --stream: stream_1
-          --icon_input: icon_input
+      command: scripts/post_clean.sh
+      cli_arguments: "{--input postout_1} {--stream stream_1} {--icon_input icon_input}"
       nodes: 1
       walltime: 00:01:00
   - store_and_clean_2:
       plugin: shell
-      command: $PWD/examples/files/scripts/post_clean.sh
-      cli_arguments:
-        keyword:
-          --input: postout_2
+      command: scripts/post_clean.sh
+      cli_arguments: "{--input postout_2}"
       nodes: 1
       walltime: 00:01:00
 data:
   available:
     - grid_file:
         type: file
-        src: $PWD/examples/files/data/grid
+        src: data/grid
     - obs_data:
         type: file
-        src: $PWD/examples/files/data/obs_data
+        src: data/obs_data
     - ERA5:
         type: file
-        src: $PWD/examples/files/data/era5
+        src: data/era5
     - dummy_source_file:
         type: file
-        src: $PWD/examples/files/data/dummy_source_file.sh
+        src: data/dummy_source_file.sh
   generated:
     - extpar_file:
         type: file
diff --git a/tests/cases/large/data/test_config_large.txt b/tests/cases/large/data/test_config_large.txt
index 24445df1..59e7bdc0 100644
--- a/tests/cases/large/data/test_config_large.txt
+++ b/tests/cases/large/data/test_config_large.txt
@@ -12,8 +12,9 @@ cycles:
             nodes: 1
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=0, tm_min=2, tm_sec=0, tm_wday=0, tm_yday=1, tm_isdst=-1)
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/extpar'
-            cli arguments: positional=None keyword={'--input': 'obs_data'} flags=['--verbose'] source_file=None
+            command: 'scripts/extpar'
+            cli arguments: '--verbose {--input obs_data}'
+            env source files: []
   - icon_bimonthly [date: 2025-01-01 00:00:00]:
       tasks:
         - preproc [date: 2025-01-01 00:00:00]:
@@ -31,8 +32,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2025-01-01 00:00:00]:
             input:
               - grid_file
@@ -48,8 +50,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2025-01-01 00:00:00]:
             input:
               - stream_1 [date: 2025-01-01 00:00:00]
@@ -63,8 +67,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2025-01-01 00:00:00]:
             input:
               - postout_1 [date: 2025-01-01 00:00:00]
@@ -79,8 +84,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2025-03-01 00:00:00]:
       tasks:
         - preproc [date: 2025-03-01 00:00:00]:
@@ -98,8 +104,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2025-03-01 00:00:00]:
             input:
               - grid_file
@@ -116,8 +123,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2025-03-01 00:00:00]:
             input:
               - stream_1 [date: 2025-03-01 00:00:00]
@@ -131,8 +140,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2025-03-01 00:00:00]:
             input:
               - postout_1 [date: 2025-03-01 00:00:00]
@@ -147,8 +157,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2025-05-01 00:00:00]:
       tasks:
         - preproc [date: 2025-05-01 00:00:00]:
@@ -168,8 +179,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2025-05-01 00:00:00]:
             input:
               - grid_file
@@ -186,8 +198,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2025-05-01 00:00:00]:
             input:
               - stream_1 [date: 2025-05-01 00:00:00]
@@ -201,8 +215,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2025-05-01 00:00:00]:
             input:
               - postout_1 [date: 2025-05-01 00:00:00]
@@ -217,8 +232,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2025-07-01 00:00:00]:
       tasks:
         - preproc [date: 2025-07-01 00:00:00]:
@@ -238,8 +254,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2025-07-01 00:00:00]:
             input:
               - grid_file
@@ -256,8 +273,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2025-07-01 00:00:00]:
             input:
               - stream_1 [date: 2025-07-01 00:00:00]
@@ -271,8 +290,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2025-07-01 00:00:00]:
             input:
               - postout_1 [date: 2025-07-01 00:00:00]
@@ -287,8 +307,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2025-09-01 00:00:00]:
       tasks:
         - preproc [date: 2025-09-01 00:00:00]:
@@ -308,8 +329,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2025-09-01 00:00:00]:
             input:
               - grid_file
@@ -326,8 +348,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2025-09-01 00:00:00]:
             input:
               - stream_1 [date: 2025-09-01 00:00:00]
@@ -341,8 +365,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2025-09-01 00:00:00]:
             input:
               - postout_1 [date: 2025-09-01 00:00:00]
@@ -357,8 +382,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2025-11-01 00:00:00]:
       tasks:
         - preproc [date: 2025-11-01 00:00:00]:
@@ -378,8 +404,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2025-11-01 00:00:00]:
             input:
               - grid_file
@@ -396,8 +423,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2025-11-01 00:00:00]:
             input:
               - stream_1 [date: 2025-11-01 00:00:00]
@@ -411,8 +440,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2025-11-01 00:00:00]:
             input:
               - postout_1 [date: 2025-11-01 00:00:00]
@@ -427,8 +457,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2026-01-01 00:00:00]:
       tasks:
         - preproc [date: 2026-01-01 00:00:00]:
@@ -448,8 +479,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2026-01-01 00:00:00]:
             input:
               - grid_file
@@ -466,8 +498,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2026-01-01 00:00:00]:
             input:
               - stream_1 [date: 2026-01-01 00:00:00]
@@ -481,8 +515,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2026-01-01 00:00:00]:
             input:
               - postout_1 [date: 2026-01-01 00:00:00]
@@ -497,8 +532,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2026-03-01 00:00:00]:
       tasks:
         - preproc [date: 2026-03-01 00:00:00]:
@@ -518,8 +554,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2026-03-01 00:00:00]:
             input:
               - grid_file
@@ -536,8 +573,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2026-03-01 00:00:00]:
             input:
               - stream_1 [date: 2026-03-01 00:00:00]
@@ -551,8 +590,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2026-03-01 00:00:00]:
             input:
               - postout_1 [date: 2026-03-01 00:00:00]
@@ -567,8 +607,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2026-05-01 00:00:00]:
       tasks:
         - preproc [date: 2026-05-01 00:00:00]:
@@ -588,8 +629,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2026-05-01 00:00:00]:
             input:
               - grid_file
@@ -606,8 +648,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2026-05-01 00:00:00]:
             input:
               - stream_1 [date: 2026-05-01 00:00:00]
@@ -621,8 +665,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2026-05-01 00:00:00]:
             input:
               - postout_1 [date: 2026-05-01 00:00:00]
@@ -637,8 +682,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2026-07-01 00:00:00]:
       tasks:
         - preproc [date: 2026-07-01 00:00:00]:
@@ -658,8 +704,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2026-07-01 00:00:00]:
             input:
               - grid_file
@@ -676,8 +723,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2026-07-01 00:00:00]:
             input:
               - stream_1 [date: 2026-07-01 00:00:00]
@@ -691,8 +740,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2026-07-01 00:00:00]:
             input:
               - postout_1 [date: 2026-07-01 00:00:00]
@@ -707,8 +757,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2026-09-01 00:00:00]:
       tasks:
         - preproc [date: 2026-09-01 00:00:00]:
@@ -728,8 +779,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2026-09-01 00:00:00]:
             input:
               - grid_file
@@ -746,8 +798,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2026-09-01 00:00:00]:
             input:
               - stream_1 [date: 2026-09-01 00:00:00]
@@ -761,8 +815,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2026-09-01 00:00:00]:
             input:
               - postout_1 [date: 2026-09-01 00:00:00]
@@ -777,8 +832,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - icon_bimonthly [date: 2026-11-01 00:00:00]:
       tasks:
         - preproc [date: 2026-11-01 00:00:00]:
@@ -798,8 +854,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/cleanup.sh'
-            cli arguments: positional=['grid_file'] keyword={'-p': 'extpar_file', '-e': 'ERA5'} flags=None source_file='dummy_source_file'
+            command: 'scripts/cleanup.sh'
+            cli arguments: '{-p extpar_file} {-e ERA5} {grid_file}'
+            env source files: []
         - icon [date: 2026-11-01 00:00:00]:
             input:
               - grid_file
@@ -816,8 +873,10 @@ cycles:
             walltime: time.struct_time(tm_year=1900, tm_mon=1, tm_mday=1, tm_hour=23, tm_min=59, tm_sec=59, tm_wday=0, tm_yday=1, tm_isdst=-1)
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
-            plugin: 'icon'
-            namelists: {'master': 'path/to/mater_nml', 'model': 'path/to/model_nml'}
+            plugin: 'shell'
+            command: 'scripts/icon'
+            cli arguments: '{-g grid_file} {--input icon_input}'
+            env source files: []
         - postproc_1 [date: 2026-11-01 00:00:00]:
             input:
               - stream_1 [date: 2026-11-01 00:00:00]
@@ -831,8 +890,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_ocn.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_1'} flags=None source_file=None
+            command: 'scripts/main_script_ocn.sh'
+            cli arguments: '{--input stream_1}'
+            env source files: []
         - store_and_clean_1 [date: 2026-11-01 00:00:00]:
             input:
               - postout_1 [date: 2026-11-01 00:00:00]
@@ -847,8 +907,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_1', '--stream': 'stream_1', '--icon_input': 'icon_input'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_1} {--stream stream_1} {--icon_input icon_input}'
+            env source files: []
   - yearly [date: 2025-01-01 00:00:00]:
       tasks:
         - postproc_2 [date: 2025-01-01 00:00:00]:
@@ -869,8 +930,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_atm.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_2'} flags=None source_file=None
+            command: 'scripts/main_script_atm.sh'
+            cli arguments: '{--input stream_2}'
+            env source files: []
             src: 'path/to/src/dir'
         - store_and_clean_2 [date: 2025-01-01 00:00:00]:
             input:
@@ -890,8 +952,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_2'} flags=None source_file=None
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_2}'
+            env source files: []
   - yearly [date: 2026-01-01 00:00:00]:
       tasks:
         - postproc_2 [date: 2026-01-01 00:00:00]:
@@ -912,8 +975,9 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/main_script_atm.sh'
-            cli arguments: positional=None keyword={'--input': 'stream_2'} flags=None source_file=None
+            command: 'scripts/main_script_atm.sh'
+            cli arguments: '{--input stream_2}'
+            env source files: []
             src: 'path/to/src/dir'
         - store_and_clean_2 [date: 2026-01-01 00:00:00]:
             input:
@@ -933,5 +997,6 @@ cycles:
             start date: 2025-01-01 00:00:00
             end date: 2027-01-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/examples/files/scripts/post_clean.sh'
-            cli arguments: positional=None keyword={'--input': 'postout_2'} flags=None source_file=None
\ No newline at end of file
+            command: 'scripts/post_clean.sh'
+            cli arguments: '{--input postout_2}'
+            env source files: []
\ No newline at end of file
diff --git a/tests/cases/parameters/config/data/forcing b/tests/cases/parameters/config/data/forcing
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/parameters/config/data/initial_conditions b/tests/cases/parameters/config/data/initial_conditions
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/parameters/config/scripts/icon.py b/tests/cases/parameters/config/scripts/icon.py
new file mode 100755
index 00000000..32f71ed6
--- /dev/null
+++ b/tests/cases/parameters/config/scripts/icon.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+"""usage: icon.py [-h] [--init [INIT]] [--restart [RESTART]] [--forcing [FORCING]] [namelist]
+
+A script mocking parts of icon in a form of a shell script
+
+options:
+  -h, --help           show this help message and exit
+  --init [INIT]        The icon init file.
+  --restart [RESTART]  The icon restart file.
+  --forcing [FORCING]  The icon forcing file.
+"""
+
+import argparse
+from pathlib import Path
+
+LOG_FILE = Path("icon.log")
+
+
+def log(text: str):
+    print(text)
+    with LOG_FILE.open("a") as f:
+        f.write(text)
+
+
+def main():
+    parser = argparse.ArgumentParser(description="A script mocking parts of icon in a form of a shell script.")
+    parser.add_argument("--init", nargs="?", type=str, help="The icon init file.")
+    parser.add_argument("namelist", nargs="?", default=None)
+    parser.add_argument("--restart", nargs="?", type=str, help="The icon restart file.")
+    parser.add_argument("--forcing", nargs="?", type=str, help="The icon forcing file.")
+
+    args = parser.parse_args()
+
+    output = Path("icon_output")
+    output.write_text("")
+
+    if args.restart:
+        if args.init:
+            msg = "Cannot use '--init' and '--restart' option at the same time."
+            raise ValueError(msg)
+        if not Path(args.restart).exists():
+            msg = f"The icon restart file {args.restart!r} was not found."
+            raise FileNotFoundError(msg)
+        restart = Path(args.restart)
+
+        log(f"Restarting from file {args.restart!r}.")
+    elif args.init:
+        if not Path(args.init).exists():
+            msg = f"The icon init file {args.init!r} was not found."
+            raise FileNotFoundError(msg)
+
+        log(f"Starting from init file {args.init!r}.")
+    else:
+        msg = "Please provide a restart or init file with the corresponding option."
+        raise ValueError(msg)
+
+    if args.namelist:
+        log(f"Namelist {args.namelist} provided. Continue with it.")
+    else:
+        log("No namelist provided. Continue with default one.")
+
+    # Main script execution continues here
+    log("Script finished running calculations")
+
+    restart = Path("restart")
+    restart.write_text("")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/cases/parameters/config/scripts/merge.py b/tests/cases/parameters/config/scripts/merge.py
new file mode 100755
index 00000000..2fa94152
--- /dev/null
+++ b/tests/cases/parameters/config/scripts/merge.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+import argparse
+from pathlib import Path
+
+
+def main():
+    parser = argparse.ArgumentParser(description="A script mocking parts of icon in a form of a shell script.")
+    parser.add_argument("file", nargs="+", type=str, help="The files to analyse.")
+    args = parser.parse_args()
+    Path("analysis").write_text(f"analysis for file {args.file}")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/cases/parameters/config/scripts/statistics.py b/tests/cases/parameters/config/scripts/statistics.py
new file mode 100755
index 00000000..2fa94152
--- /dev/null
+++ b/tests/cases/parameters/config/scripts/statistics.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+import argparse
+from pathlib import Path
+
+
+def main():
+    parser = argparse.ArgumentParser(description="A script mocking parts of icon in a form of a shell script.")
+    parser.add_argument("file", nargs="+", type=str, help="The files to analyse.")
+    args = parser.parse_args()
+    Path("analysis").write_text(f"analysis for file {args.file}")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/cases/parameters/config/test_config_parameters.yml b/tests/cases/parameters/config/test_config_parameters.yml
index ec993af9..9cc8a3e6 100644
--- a/tests/cases/parameters/config/test_config_parameters.yml
+++ b/tests/cases/parameters/config/test_config_parameters.yml
@@ -1,6 +1,6 @@
 ---
 start_date: &root_start_date '2026-01-01T00:00'
-end_date: &root_end_date '2028-01-01T00:00'
+end_date: &root_end_date '2026-03-01T00:00'
 
 cycles:
   - bimonthly_tasks:
@@ -10,7 +10,7 @@ cycles:
       tasks:
         - icon:
             inputs:
-              - initial conditions:
+              - initial_conditions:
                   when:
                     at: *root_start_date
               - icon_restart:
@@ -39,40 +39,38 @@ cycles:
         - merge:
             inputs:
               - analysis_foo_bar:
-                  lag: ['P0M', 'P2M', 'P4M', 'P6M', 'P8M', 'P10M']
+                  lag: ['P0M']
             outputs: [yearly_analysis]
 
 tasks:
   - icon:
       plugin: shell
-      command: $PWD/tests/files/scripts/icon.py
-      cli_arguments:
-        keyword:
-          --restart: icon_restart
+      command: scripts/icon.py
+      cli_arguments: "{--restart icon_restart} {--init initial_conditions} {--forcing forcing}"
       parameters: [foo, bar]
   - statistics_foo:
       plugin: shell
-      command: $PWD/tests/files/scripts/statistics.py
+      command: scripts/statistics.py
       parameters: [bar]
   - statistics_foo_bar:
       plugin: shell
-      command: $PWD/tests/files/scripts/statistics.py
+      command: scripts/statistics.py
   - merge:
       plugin: shell
-      command: $PWD/tests/files/scripts/merge.py
+      command: scripts/merge.py
 
 data:
   available:
-    - initial conditions:
+    - initial_conditions:
         type: file
-        src: .
+        src: data/initial_conditions
     - forcing:
         type: file
-        src: .
+        src: data/forcing
   generated:
     - icon_output:
         type: file
-        src: output
+        src: icon_output
         parameters: [foo, bar]
     - icon_restart:
         type: file
@@ -80,15 +78,15 @@ data:
         parameters: [foo, bar]
     - analysis_foo:
         type: file
-        src: analysis_foo
+        src: analysis
         parameters: [bar]
     - analysis_foo_bar:
         type: file
-        src: foo_analysis_bar
+        src: analysis
     - yearly_analysis:
         type: file
-        src: yearly_analysis
+        src: analysis
 
 parameters:
-  foo: [0, 1, 2]
+  foo: [0, 1]
   bar: [3.0, 3.5]
diff --git a/tests/cases/parameters/data/test_config_parameters.txt b/tests/cases/parameters/data/test_config_parameters.txt
index fc0a8282..d41c87ba 100644
--- a/tests/cases/parameters/data/test_config_parameters.txt
+++ b/tests/cases/parameters/data/test_config_parameters.txt
@@ -3,7 +3,7 @@ cycles:
       tasks:
         - icon [date: 2026-01-01 00:00:00, foo: 0, bar: 3.0]:
             input:
-              - initial conditions
+              - initial_conditions
               - forcing
             output:
               - icon_output [date: 2026-01-01 00:00:00, foo: 0, bar: 3.0]
@@ -11,13 +11,14 @@ cycles:
             name: 'icon'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'foo': 0, 'bar': 3.0}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions} {--forcing forcing}'
+            env source files: []
         - icon [date: 2026-01-01 00:00:00, foo: 0, bar: 3.5]:
             input:
-              - initial conditions
+              - initial_conditions
               - forcing
             output:
               - icon_output [date: 2026-01-01 00:00:00, foo: 0, bar: 3.5]
@@ -25,13 +26,14 @@ cycles:
             name: 'icon'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'foo': 0, 'bar': 3.5}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions} {--forcing forcing}'
+            env source files: []
         - icon [date: 2026-01-01 00:00:00, foo: 1, bar: 3.0]:
             input:
-              - initial conditions
+              - initial_conditions
               - forcing
             output:
               - icon_output [date: 2026-01-01 00:00:00, foo: 1, bar: 3.0]
@@ -39,13 +41,14 @@ cycles:
             name: 'icon'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'foo': 1, 'bar': 3.0}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions} {--forcing forcing}'
+            env source files: []
         - icon [date: 2026-01-01 00:00:00, foo: 1, bar: 3.5]:
             input:
-              - initial conditions
+              - initial_conditions
               - forcing
             output:
               - icon_output [date: 2026-01-01 00:00:00, foo: 1, bar: 3.5]
@@ -53,64 +56,39 @@ cycles:
             name: 'icon'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'foo': 1, 'bar': 3.5}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-01-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - initial conditions
-              - forcing
-            output:
-              - icon_output [date: 2026-01-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-01-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - initial conditions
-              - forcing
-            output:
-              - icon_output [date: 2026-01-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions} {--forcing forcing}'
+            env source files: []
         - statistics_foo [date: 2026-01-01 00:00:00, bar: 3.0]:
             input:
               - icon_output [date: 2026-01-01 00:00:00, foo: 0, bar: 3.0]
               - icon_output [date: 2026-01-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2026-01-01 00:00:00, foo: 2, bar: 3.0]
             output:
               - analysis_foo [date: 2026-01-01 00:00:00, bar: 3.0]
             name: 'statistics_foo'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'bar': 3.0}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
+            command: 'scripts/statistics.py'
+            cli arguments: ''
+            env source files: []
         - statistics_foo [date: 2026-01-01 00:00:00, bar: 3.5]:
             input:
               - icon_output [date: 2026-01-01 00:00:00, foo: 0, bar: 3.5]
               - icon_output [date: 2026-01-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2026-01-01 00:00:00, foo: 2, bar: 3.5]
             output:
               - analysis_foo [date: 2026-01-01 00:00:00, bar: 3.5]
             name: 'statistics_foo'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0), 'bar': 3.5}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
+            command: 'scripts/statistics.py'
+            cli arguments: ''
+            env source files: []
         - statistics_foo_bar [date: 2026-01-01 00:00:00]:
             input:
               - analysis_foo [date: 2026-01-01 00:00:00, bar: 3.5]
@@ -120,1406 +98,23 @@ cycles:
             name: 'statistics_foo_bar'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0)}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2026-03-01 00:00:00]:
-      tasks:
-        - icon [date: 2026-03-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-03-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-03-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-03-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-03-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-03-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-01-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2026-03-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2026-03-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2026-03-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2026-03-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2026-03-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2026-03-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2026-03-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2026-03-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2026-03-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2026-03-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2026-03-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2026-03-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2026-03-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2026, 3, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2026-05-01 00:00:00]:
-      tasks:
-        - icon [date: 2026-05-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-05-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-05-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-05-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-05-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-05-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-03-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2026-05-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2026-05-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2026-05-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2026-05-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2026-05-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2026-05-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2026-05-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2026-05-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2026-05-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2026-05-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2026-05-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2026-05-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2026-05-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2026, 5, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2026-07-01 00:00:00]:
-      tasks:
-        - icon [date: 2026-07-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-07-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-07-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-07-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-07-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-07-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-05-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2026-07-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2026-07-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2026-07-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2026-07-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2026-07-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2026-07-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2026-07-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2026-07-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2026-07-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2026-07-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2026-07-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2026-07-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2026-07-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2026, 7, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2026-09-01 00:00:00]:
-      tasks:
-        - icon [date: 2026-09-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-09-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-09-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-09-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-09-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-09-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-07-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2026-09-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2026-09-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2026-09-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2026-09-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2026-09-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2026-09-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2026-09-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2026-09-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2026-09-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2026-09-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2026-09-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2026-09-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2026-09-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2026, 9, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2026-11-01 00:00:00]:
+            command: 'scripts/statistics.py'
+            cli arguments: ''
+            env source files: []
+  - yearly [date: 2026-01-01 00:00:00]:
       tasks:
-        - icon [date: 2026-11-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-11-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-11-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-11-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-11-01 00:00:00, foo: 2, bar: 3.0]:
+        - merge [date: 2026-01-01 00:00:00]:
             input:
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2026-11-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-09-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2026-11-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2026-11-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2026-11-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2026-11-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2026-11-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2026-11-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2026-11-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2026-11-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2026-11-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2026-11-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2026-11-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2026-11-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2026-11-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2026, 11, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2027-01-01 00:00:00]:
-      tasks:
-        - icon [date: 2027-01-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-01-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-01-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-01-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-01-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-01-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2026-11-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2027-01-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2027-01-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2027-01-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2027-01-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2027-01-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2027-01-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2027-01-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2027-01-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2027-01-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2027-01-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2027-01-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2027-01-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2027-01-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2027-03-01 00:00:00]:
-      tasks:
-        - icon [date: 2027-03-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-03-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-03-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-03-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-03-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-03-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-01-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2027-03-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2027-03-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2027-03-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2027-03-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2027-03-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2027-03-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2027-03-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2027-03-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2027-03-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2027-03-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2027-03-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2027-03-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2027-03-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2027, 3, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2027-05-01 00:00:00]:
-      tasks:
-        - icon [date: 2027-05-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-05-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-05-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-05-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-05-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-05-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-03-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2027-05-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2027-05-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2027-05-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2027-05-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2027-05-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2027-05-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2027-05-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2027-05-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2027-05-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2027-05-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2027-05-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2027-05-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2027-05-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2027, 5, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2027-07-01 00:00:00]:
-      tasks:
-        - icon [date: 2027-07-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-07-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-07-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-07-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-07-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-07-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-05-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2027-07-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2027-07-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2027-07-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2027-07-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2027-07-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2027-07-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2027-07-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2027-07-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2027-07-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2027-07-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2027-07-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2027-07-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2027-07-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2027, 7, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2027-09-01 00:00:00]:
-      tasks:
-        - icon [date: 2027-09-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-09-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-09-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-09-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-09-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-09-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-07-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2027-09-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2027-09-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2027-09-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2027-09-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2027-09-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2027-09-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2027-09-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2027-09-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2027-09-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2027-09-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2027-09-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2027-09-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2027-09-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2027, 9, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - bimonthly_tasks [date: 2027-11-01 00:00:00]:
-      tasks:
-        - icon [date: 2027-11-01 00:00:00, foo: 0, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 0, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_restart [date: 2027-11-01 00:00:00, foo: 0, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'foo': 0, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-11-01 00:00:00, foo: 0, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 0, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_restart [date: 2027-11-01 00:00:00, foo: 0, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'foo': 0, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-11-01 00:00:00, foo: 1, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 1, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_restart [date: 2027-11-01 00:00:00, foo: 1, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'foo': 1, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-11-01 00:00:00, foo: 1, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 1, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_restart [date: 2027-11-01 00:00:00, foo: 1, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'foo': 1, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-11-01 00:00:00, foo: 2, bar: 3.0]:
-            input:
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 2, bar: 3.0]
-              - forcing
-            output:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 2, bar: 3.0]
-              - icon_restart [date: 2027-11-01 00:00:00, foo: 2, bar: 3.0]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'foo': 2, 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - icon [date: 2027-11-01 00:00:00, foo: 2, bar: 3.5]:
-            input:
-              - icon_restart [date: 2027-09-01 00:00:00, foo: 2, bar: 3.5]
-              - forcing
-            output:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 2, bar: 3.5]
-              - icon_restart [date: 2027-11-01 00:00:00, foo: 2, bar: 3.5]
-            name: 'icon'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'foo': 2, 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
-        - statistics_foo [date: 2027-11-01 00:00:00, bar: 3.0]:
-            input:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 0, bar: 3.0]
-              - icon_output [date: 2027-11-01 00:00:00, foo: 1, bar: 3.0]
-              - icon_output [date: 2027-11-01 00:00:00, foo: 2, bar: 3.0]
-            output:
-              - analysis_foo [date: 2027-11-01 00:00:00, bar: 3.0]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'bar': 3.0}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo [date: 2027-11-01 00:00:00, bar: 3.5]:
-            input:
-              - icon_output [date: 2027-11-01 00:00:00, foo: 0, bar: 3.5]
-              - icon_output [date: 2027-11-01 00:00:00, foo: 1, bar: 3.5]
-              - icon_output [date: 2027-11-01 00:00:00, foo: 2, bar: 3.5]
-            output:
-              - analysis_foo [date: 2027-11-01 00:00:00, bar: 3.5]
-            name: 'statistics_foo'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0), 'bar': 3.5}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-        - statistics_foo_bar [date: 2027-11-01 00:00:00]:
-            input:
-              - analysis_foo [date: 2027-11-01 00:00:00, bar: 3.5]
-              - analysis_foo [date: 2027-11-01 00:00:00, bar: 3.0]
-            output:
-              - analysis_foo_bar [date: 2027-11-01 00:00:00]
-            name: 'statistics_foo_bar'
-            coordinates: {'date': datetime.datetime(2027, 11, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/statistics.py'
-  - yearly [date: 2026-01-01 00:00:00]:
-      tasks:
-        - merge [date: 2026-01-01 00:00:00]:
-            input:
-              - analysis_foo_bar [date: 2026-01-01 00:00:00]
-              - analysis_foo_bar [date: 2026-03-01 00:00:00]
-              - analysis_foo_bar [date: 2026-05-01 00:00:00]
-              - analysis_foo_bar [date: 2026-07-01 00:00:00]
-              - analysis_foo_bar [date: 2026-09-01 00:00:00]
-              - analysis_foo_bar [date: 2026-11-01 00:00:00]
+              - analysis_foo_bar [date: 2026-01-01 00:00:00]
             output:
               - yearly_analysis [date: 2026-01-01 00:00:00]
             name: 'merge'
             coordinates: {'date': datetime.datetime(2026, 1, 1, 0, 0)}
             start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
-            plugin: 'shell'
-            command: '$PWD/tests/files/scripts/merge.py'
-  - yearly [date: 2027-01-01 00:00:00]:
-      tasks:
-        - merge [date: 2027-01-01 00:00:00]:
-            input:
-              - analysis_foo_bar [date: 2027-01-01 00:00:00]
-              - analysis_foo_bar [date: 2027-03-01 00:00:00]
-              - analysis_foo_bar [date: 2027-05-01 00:00:00]
-              - analysis_foo_bar [date: 2027-07-01 00:00:00]
-              - analysis_foo_bar [date: 2027-09-01 00:00:00]
-              - analysis_foo_bar [date: 2027-11-01 00:00:00]
-            output:
-              - yearly_analysis [date: 2027-01-01 00:00:00]
-            name: 'merge'
-            coordinates: {'date': datetime.datetime(2027, 1, 1, 0, 0)}
-            start date: 2026-01-01 00:00:00
-            end date: 2028-01-01 00:00:00
+            end date: 2026-03-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/merge.py'
\ No newline at end of file
+            command: 'scripts/merge.py'
+            cli arguments: ''
+            env source files: []
\ No newline at end of file
diff --git a/tests/cases/small/config/data/initial_conditions b/tests/cases/small/config/data/initial_conditions
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/small/config/data/input b/tests/cases/small/config/data/input
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/cases/small/config/scripts/cleanup.py b/tests/cases/small/config/scripts/cleanup.py
new file mode 100755
index 00000000..de7aebad
--- /dev/null
+++ b/tests/cases/small/config/scripts/cleanup.py
@@ -0,0 +1,10 @@
+#!/usr/bin/env python
+
+
+def main():
+    # Main script execution continues here
+    print("Cleaning")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/cases/small/config/scripts/icon.py b/tests/cases/small/config/scripts/icon.py
new file mode 100755
index 00000000..32f71ed6
--- /dev/null
+++ b/tests/cases/small/config/scripts/icon.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+"""usage: icon.py [-h] [--init [INIT]] [--restart [RESTART]] [--forcing [FORCING]] [namelist]
+
+A script mocking parts of icon in a form of a shell script
+
+options:
+  -h, --help           show this help message and exit
+  --init [INIT]        The icon init file.
+  --restart [RESTART]  The icon restart file.
+  --forcing [FORCING]  The icon forcing file.
+"""
+
+import argparse
+from pathlib import Path
+
+LOG_FILE = Path("icon.log")
+
+
+def log(text: str):
+    print(text)
+    with LOG_FILE.open("a") as f:
+        f.write(text)
+
+
+def main():
+    parser = argparse.ArgumentParser(description="A script mocking parts of icon in a form of a shell script.")
+    parser.add_argument("--init", nargs="?", type=str, help="The icon init file.")
+    parser.add_argument("namelist", nargs="?", default=None)
+    parser.add_argument("--restart", nargs="?", type=str, help="The icon restart file.")
+    parser.add_argument("--forcing", nargs="?", type=str, help="The icon forcing file.")
+
+    args = parser.parse_args()
+
+    output = Path("icon_output")
+    output.write_text("")
+
+    if args.restart:
+        if args.init:
+            msg = "Cannot use '--init' and '--restart' option at the same time."
+            raise ValueError(msg)
+        if not Path(args.restart).exists():
+            msg = f"The icon restart file {args.restart!r} was not found."
+            raise FileNotFoundError(msg)
+        restart = Path(args.restart)
+
+        log(f"Restarting from file {args.restart!r}.")
+    elif args.init:
+        if not Path(args.init).exists():
+            msg = f"The icon init file {args.init!r} was not found."
+            raise FileNotFoundError(msg)
+
+        log(f"Starting from init file {args.init!r}.")
+    else:
+        msg = "Please provide a restart or init file with the corresponding option."
+        raise ValueError(msg)
+
+    if args.namelist:
+        log(f"Namelist {args.namelist} provided. Continue with it.")
+    else:
+        log("No namelist provided. Continue with default one.")
+
+    # Main script execution continues here
+    log("Script finished running calculations")
+
+    restart = Path("restart")
+    restart.write_text("")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/cases/small/config/test_config_small.yml b/tests/cases/small/config/test_config_small.yml
index 8b163fc4..58555a85 100644
--- a/tests/cases/small/config/test_config_small.yml
+++ b/tests/cases/small/config/test_config_small.yml
@@ -9,6 +9,10 @@ cycles:
       tasks:
         - icon:
             inputs:
+              - icon_namelist
+              - initial_conditions:
+                  when:
+                    at: *root_start_date
               - icon_restart:
                   when:
                     after: *root_start_date
@@ -23,22 +27,23 @@ cycles:
 tasks:
   - icon:
       plugin: shell
-      command: $PWD/tests/files/scripts/icon.py
-      cli_arguments:
-        keyword:
-          --restart: icon_restart
+      command: scripts/icon.py
+      cli_arguments: "{--restart icon_restart} {--init initial_conditions}"
   - cleanup:
       plugin: shell
-      command: $PWD/tests/files/scripts/cleanup.py
+      command: scripts/cleanup.py
 data:
   available:
-     - icon_input:
+     - icon_namelist:
+         type: file
+         src: data/input
+     - initial_conditions:
          type: file
-         src: $PWD/tests/files/data/input
+         src: data/initial_conditions
   generated:
      - icon_output:
          type: file
-         src: output
+         src: icon_output
      - icon_restart:
          type: file
          src: restart
diff --git a/tests/cases/small/data/test_config_small.txt b/tests/cases/small/data/test_config_small.txt
index 8af67b5f..c3b0980f 100644
--- a/tests/cases/small/data/test_config_small.txt
+++ b/tests/cases/small/data/test_config_small.txt
@@ -2,6 +2,9 @@ cycles:
   - bimonthly_tasks [date: 2026-01-01 00:00:00]:
       tasks:
         - icon [date: 2026-01-01 00:00:00]:
+            input:
+              - icon_namelist
+              - initial_conditions
             output:
               - icon_output [date: 2026-01-01 00:00:00]
               - icon_restart [date: 2026-01-01 00:00:00]
@@ -10,12 +13,14 @@ cycles:
             start date: 2026-01-01 00:00:00
             end date: 2026-06-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions}'
+            env source files: []
   - bimonthly_tasks [date: 2026-03-01 00:00:00]:
       tasks:
         - icon [date: 2026-03-01 00:00:00]:
             input:
+              - icon_namelist
               - icon_restart [date: 2026-01-01 00:00:00]
             output:
               - icon_output [date: 2026-03-01 00:00:00]
@@ -25,12 +30,14 @@ cycles:
             start date: 2026-01-01 00:00:00
             end date: 2026-06-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions}'
+            env source files: []
   - bimonthly_tasks [date: 2026-05-01 00:00:00]:
       tasks:
         - icon [date: 2026-05-01 00:00:00]:
             input:
+              - icon_namelist
               - icon_restart [date: 2026-03-01 00:00:00]
             output:
               - icon_output [date: 2026-05-01 00:00:00]
@@ -40,8 +47,9 @@ cycles:
             start date: 2026-01-01 00:00:00
             end date: 2026-06-01 00:00:00
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/icon.py'
-            cli arguments: positional=None keyword={'--restart': 'icon_restart'} flags=None source_file=None
+            command: 'scripts/icon.py'
+            cli arguments: '{--restart icon_restart} {--init initial_conditions}'
+            env source files: []
   - lastly:
       tasks:
         - cleanup:
@@ -50,4 +58,6 @@ cycles:
             name: 'cleanup'
             coordinates: {}
             plugin: 'shell'
-            command: '$PWD/tests/files/scripts/cleanup.py'
\ No newline at end of file
+            command: 'scripts/cleanup.py'
+            cli arguments: ''
+            env source files: []
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
index e69de29b..4a579bb5 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -0,0 +1 @@
+pytest_plugins = ["aiida.tools.pytest_fixtures"]
diff --git a/tests/test_wc_workflow.py b/tests/test_wc_workflow.py
index 5c253a3e..c602a29f 100644
--- a/tests/test_wc_workflow.py
+++ b/tests/test_wc_workflow.py
@@ -5,13 +5,9 @@
 from sirocco.core import Workflow
 from sirocco.pretty_print import PrettyPrinter
 from sirocco.vizgraph import VizGraph
+from sirocco.workgraph import AiidaWorkGraph
 
-
-@pytest.fixture
-def pprinter():
-    return PrettyPrinter()
-
-
+# configs that are tested for parsing
 config_test_files = [
     "tests/cases/small/config/test_config_small.yml",
     "tests/cases/large/config/test_config_large.yml",
@@ -29,14 +25,20 @@ def config_paths(request):
     }
 
 
+@pytest.fixture
+def pprinter():
+    return PrettyPrinter()
+
+
 def test_parse_config_file(config_paths, pprinter):
     reference_str = config_paths["txt"].read_text()
     test_str = pprinter.format(Workflow.from_yaml(config_paths["yml"]))
     if test_str != reference_str:
         new_path = Path(config_paths["txt"]).with_suffix(".new.txt")
         new_path.write_text(test_str)
-        msg = f"Workflow graph doesn't match serialized data. New graph string dumped to {new_path}."
-        raise ValueError(msg)
+        assert (
+            reference_str == test_str
+        ), f"Workflow graph doesn't match serialized data. New graph string dumped to {new_path}."
 
 
 @pytest.mark.skip(reason="don't run it each time, uncomment to regenerate serilaized data")
@@ -46,3 +48,18 @@ def test_serialize_workflow(config_paths, pprinter):
 
 def test_vizgraph(config_paths):
     VizGraph.from_yaml(config_paths["yml"]).draw(file_path=config_paths["svg"])
+
+
+# configs that are tested for running workgraph
+@pytest.mark.parametrize(
+    "config_path",
+    [
+        "tests/cases/small/config/test_config_small.yml",
+        "tests/cases/parameters/config/test_config_parameters.yml",
+    ],
+)
+def test_run_workgraph(config_path):
+    core_workflow = Workflow.from_yaml(config_path)
+    aiida_workflow = AiidaWorkGraph(core_workflow)
+    out = aiida_workflow.run()
+    assert out.get("execution_count", None).value == 0  # TODO: should be 1 but we need to update workgraph for this