if one project cannot be configured, don't crash buildbot

Instead log the error with more context.

buildbot_nix/buildbot_nix/__init__.py

@@ -1799,24 +1799,27 @@ def configure(self, config: dict[str, Any]) -> None:
             atexit.register(lambda: DB.close() if DB is not None else None)
 
         for project in projects:
-            config_for_project(
-                config=config,
-                project=project,
-                worker_names=worker_names,
-                nix_supported_systems=self.config.build_systems,
-                nix_eval_worker_count=self.config.eval_worker_count
-                or multiprocessing.cpu_count(),
-                nix_eval_max_memory_size=self.config.eval_max_memory_size,
-                eval_lock=eval_lock,
-                post_build_steps=[
-                    x.to_buildstep() for x in self.config.post_build_steps
-                ],
-                job_report_limit=self.config.job_report_limit,
-                per_repo_effects_secrets=self.config.effects_per_repo_secrets,
-                failed_builds_db=DB,
-                branch_config_dict=self.config.branches,
-                outputs_path=self.config.outputs_path,
-            )
+            try:
+                config_for_project(
+                    config=config,
+                    project=project,
+                    worker_names=worker_names,
+                    nix_supported_systems=self.config.build_systems,
+                    nix_eval_worker_count=self.config.eval_worker_count
+                    or multiprocessing.cpu_count(),
+                    nix_eval_max_memory_size=self.config.eval_max_memory_size,
+                    eval_lock=eval_lock,
+                    post_build_steps=[
+                        x.to_buildstep() for x in self.config.post_build_steps
+                    ],
+                    job_report_limit=self.config.job_report_limit,
+                    per_repo_effects_secrets=self.config.effects_per_repo_secrets,
+                    failed_builds_db=DB,
+                    branch_config_dict=self.config.branches,
+                    outputs_path=self.config.outputs_path,
+                )
+            except Exception as e:  # noqa: BLE001
+                log.failure(f"Failed to configure project {project.name}")
 
         config["workers"].extend(worker.LocalWorker(w) for w in SKIPPED_BUILDER_NAMES)
 

buildbot_nix/buildbot_nix/models.py

@@ -1,5 +1,5 @@
-import re
 import json
+import re
 from collections.abc import Callable, Mapping
 from enum import Enum
 from pathlib import Path
@@ -9,8 +9,8 @@
 from pydantic import BaseModel, ConfigDict, Field, GetCoreSchemaHandler, TypeAdapter
 from pydantic_core import CoreSchema, core_schema
 
-from .secrets import read_secret_file
 from .errors import BuildbotNixError
+from .secrets import read_secret_file
 
 
 class InternalError(Exception):