diff --git a/CMakeLists.txt b/CMakeLists.txt
index 94e768e..3383943 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,228 +1,92 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 3.16)
-
-SET(CARMA_VERSION_MAJOR 0)
-SET(CARMA_VERSION_MINOR 6)
-SET(CARMA_VERSION_PATCH 6)
-SET(CARMA_VERSION_INFO "${CARMA_VERSION_MAJOR}.${CARMA_VERSION_MINOR}.${CARMA_VERSION_PATCH}")
-
-PROJECT(
-    carma
-    VERSION ${CARMA_VERSION_INFO}
-    LANGUAGES CXX
-)
-INCLUDE(GNUInstallDirs)
-
-SET(CMAKE_MODULE_PATH_SAVED ${CMAKE_MODULE_PATH})
-LIST(INSERT CMAKE_MODULE_PATH 0 "${PROJECT_SOURCE_DIR}/cmake")
-# ##############################################################################
-#                                   SETTINGS                                   #
-# ##############################################################################
-OPTION(CARMA_INSTALL_LIB "Install CARMA headers" OFF)
-SET(CARMA_INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_INCLUDEDIR}/carma")
-
-SET(DEFAULT_BUILD_TYPE "Release")
-# Set build type to Release if not specified
-INCLUDE(BuildType)
-
-IF (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-    # workaround like https://github.com/nlohmann/json/issues/1408
-    # to avoid error like: carma\...\include\armadillo_bits/arma_str.hpp(194):
-    # error C2039: '_snprintf': is not a member of 'std'
-    ADD_DEFINITIONS(-DHAVE_SNPRINTF)
-ENDIF ()
-
-OPTION(CARMA_DEV_MODE "Enable additional definitions for development" OFF)
-OPTION(CARMA_DEV_DEBUG_MODE "Turn on all debugging definitions" OFF)
-OPTION(CARMA_BUILD_TESTS "Build tests for carma" OFF)
-OPTION(CARMA_BUILD_EXAMPLES "Build examples for carma" OFF)
-
-# collect user settable options
-INCLUDE(${PROJECT_SOURCE_DIR}/carma_config.cmake)
-INCLUDE(ParseOptions)
-CONFIGURE_FILE(
-    ${PROJECT_SOURCE_DIR}/include/carma_bits/config.h.in
-    ${PROJECT_BINARY_DIR}/include/carma_bits/generated_config.h
-    @ONLY
-)
+cmake_minimum_required(VERSION 3.20)
+
+set(CARMA_VERSION_MAJOR 1)
+set(CARMA_VERSION_MINOR 0)
+set(CARMA_VERSION_PATCH 0)
+set(CARMA_VERSION_INFO
+    "${CARMA_VERSION_MAJOR}.${CARMA_VERSION_MINOR}.${CARMA_VERSION_PATCH}")
+
+project(
+  carma
+  VERSION ${CARMA_VERSION_INFO}
+  LANGUAGES CXX)
+include(GNUInstallDirs)
 
 # ##############################################################################
-#                                   TARGET                                     #
+# SETTINGS                                   #
 # ##############################################################################
-ADD_LIBRARY(carma INTERFACE)
-ADD_LIBRARY(carma::carma ALIAS carma)
-
-TARGET_COMPILE_DEFINITIONS(carma
-    INTERFACE
-    CARMA_USE_GENERATED_CONFIG=1
-    CARMA_VERSION_MAJOR=${CARMA_VERSION_MAJOR}
-    CARMA_VERSION_MINOR=${CARMA_VERSION_MINOR}
-    CARMA_VERSION_PATCH=${CARMA_VERSION_PATCH}
-    CARMA_VERSION_NAME=${CARMA_VERSION_INFO}
-    "$<$<CONFIG:RELEASE>:${CARMA_RELEASE_DEFINITIONS}>"
-)
-TARGET_COMPILE_FEATURES(carma INTERFACE cxx_std_14)
-
-IF(CARMA_DEV_MODE)
-    TARGET_COMPILE_OPTIONS(carma
-        INTERFACE
-        -Wall
-        -Wextra
-        -Wunused-variable
-        -Wunused-const-variable
-    )
-ENDIF()
-
-TARGET_INCLUDE_DIRECTORIES(carma
-    INTERFACE
-    $<INSTALL_INTERFACE:${CARMA_INCLUDE_INSTALL_DIR}>
-    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
-    $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
-)
-
-TARGET_LINK_LIBRARIES(carma
-    INTERFACE
-        armadillo::armadillo
-        Python3::NumPy
-        Python3::Module
-        pybind11::pybind11
-)
-
-ADD_LIBRARY(carma_headers INTERFACE)
-ADD_LIBRARY(carma::headers ALIAS carma_headers)
-
-TARGET_COMPILE_DEFINITIONS(carma_headers
-    INTERFACE
-    CARMA_VERSION_MAJOR=${CARMA_VERSION_MAJOR}
-    CARMA_VERSION_MINOR=${CARMA_VERSION_MINOR}
-    CARMA_VERSION_PATCH=${CARMA_VERSION_PATCH}
-    CARMA_VERSION_NAME=${CARMA_VERSION_INFO}
-)
-TARGET_COMPILE_FEATURES(carma_headers INTERFACE cxx_std_14)
-
-TARGET_INCLUDE_DIRECTORIES(carma_headers
-    INTERFACE
-    $<INSTALL_INTERFACE:${CARMA_INCLUDE_INSTALL_DIR}>
-    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
-    $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
-)
-    
-
-# Only install the headers
-IF (CARMA_INSTALL_LIB)
-    # modified from https://dominikberner.ch/cmake-interface-lib/
-
-    # locations are provided by GNUInstallDirs
-    INSTALL(
-        TARGETS carma
-        EXPORT carma_Targets
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    )
-
-    INSTALL(
-        TARGETS carma_headers
-        EXPORT carma_Header_Targets
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    )
-    
-    INCLUDE(CMakePackageConfigHelpers)
-    write_basic_package_version_file(
-        "carmaConfigVersion.cmake"
-        VERSION ${PROJECT_VERSION}
-        COMPATIBILITY SameMinorVersion
-    )
-    
-    configure_package_config_file(
-        "${PROJECT_SOURCE_DIR}/cmake/carmaConfig.cmake.in"
-        "${PROJECT_BINARY_DIR}/carmaConfig.cmake"
-        INSTALL_DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
-    )
-
-    INSTALL(
-      EXPORT carma_Targets
-      FILE carmaCarmaTargets.cmake
-      NAMESPACE carma::
-      DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
-    )
-
-    INSTALL(
-      EXPORT carma_Header_Targets
-      FILE carmaHeaderTargets.cmake
-      NAMESPACE carma::
-      DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
-    )
-
-    INSTALL(
-        FILES
-            "${PROJECT_BINARY_DIR}/carmaConfig.cmake"
-            "${PROJECT_BINARY_DIR}/carmaConfigVersion.cmake"
-            "${PROJECT_SOURCE_DIR}/cmake/carmaDependencyTargets.cmake"
-        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
-    )
-
-    INSTALL(
-        FILES "${PROJECT_SOURCE_DIR}/include/carma"
-        DESTINATION ${CARMA_INCLUDE_INSTALL_DIR}
-    )
-
-    INSTALL(
-        DIRECTORY ${PROJECT_SOURCE_DIR}/include/carma_bits
-        DESTINATION ${CARMA_INCLUDE_INSTALL_DIR}
-        FILES_MATCHING
-            PATTERN "*.h"
-    )
-
-     INSTALL(
-        FILES ${PROJECT_BINARY_DIR}/include/carma_bits/generated_config.h 
-        DESTINATION ${CARMA_INCLUDE_INSTALL_DIR}/carma_bits
-     )
-    
-ELSE()
-    # ##############################################################################
-    #                                REQUIREMENTS                                  #
-    # ##############################################################################
-    FIND_PACKAGE(Python3 COMPONENTS Development NumPy QUIET)
-    IF (NOT Python3_FOUND)
-        FIND_PACKAGE(Python3 COMPONENTS Development.Module NumPy REQUIRED)
-    ENDIF()
-
-    # Needed to ensure the same Python executable is found by Pybind11
-    IF (NOT DEFINED PYTHON_EXECUTABLE)
-        SET(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
-    ENDIF ()
-
-    # create armadillo and or pybind11 target if not defined
-    INCLUDE(ThirdPartyTargets)
-
-    TARGET_PRECOMPILE_HEADERS(carma
-        INTERFACE
-            ${PROJECT_SOURCE_DIR}/include/carma_bits/cnalloc.h
-    )
-ENDIF()
+# add_subdirectory(${PROJECT_SOURCE_DIR}/extern/armadillo-code)
+set(CMAKE_CXX_STANDARD
+    17
+    CACHE STRING "C++ version selection")
+set(CMAKE_CXX_STANDARD_REQUIRED ON) # optional, ensure standard is supported
+set(CMAKE_CXX_EXTENSIONS OFF) # optional, keep compiler extensions off
+
+if(NOT DEFINED CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "Release")
+endif()
+
+# find_program(CCACHE_FOUND ccache) if(CCACHE_FOUND) set_property(GLOBAL
+# PROPERTY RULE_LAUNCH_COMPILE ccache) endif(CCACHE_FOUND)
+
+# if (CMAKE_CXX_COMPILER_ID MATCHES "MSVC") # workaround like
+# https://github.com/nlohmann/json/issues/1408 # to avoid error like:
+# carma\...\include\armadillo_bits/arma_str.hpp(194): # error C2039:
+# '_snprintf': is not a member of 'std' add_definitions(-DHAVE_SNPRINTF) endif
+# ()
+
+# Create the public carma header
+# configure_file("${PROJECT_SOURCE_DIR}/include/carma.hpp"
+# "${PROJECT_SOURCE_DIR}/include/carma" COPYONLY)
+
 # ##############################################################################
-#                              TEST TARGETS                                    #
+# REQUIREMENTS                                  #
 # ##############################################################################
 
-IF(CARMA_BUILD_TESTS OR CARMA_BUILD_EXAMPLES)
-    SET(CMAKE_CXX_STANDARD 14)
-ENDIF()
-
-IF(CARMA_BUILD_TESTS)
-    INCLUDE(CTest)
-    ENABLE_TESTING()
-    INCLUDE(GetCatch2)
-    ADD_SUBDIRECTORY(tests)
-    INCLUDE(ClangFormatTarget)
-    INCLUDE(CoverageTarget)
-ENDIF()
-
-IF(CARMA_BUILD_EXAMPLES)
-    ADD_SUBDIRECTORY(examples)
-ENDIF()
-#------------------------------------------------------
-INCLUDE(ClearOptions)
-SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH_SAVED})
-UNSET(CMAKE_MODULE_PATH_SAVED)
+find_package(
+  Python3
+  COMPONENTS Interpreter Development NumPy
+  REQUIRED)
+if(NOT DEFINED PYTHON_EXECUTABLE)
+  set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
+endif()
+find_package(pybind11 REQUIRED)
+find_package(Armadillo REQUIRED)
+
+add_library(carma INTERFACE)
+add_library(carma_expansion INTERFACE)
+add_library(carma_headers INTERFACE)
+add_library(carma::carma ALIAS carma)
+add_library(carma::headers ALIAS carma_headers)
+add_library(carma::expansion ALIAS carma_expansion)
+
+target_compile_definitions(
+  carma
+  INTERFACE CARMA_VERSION_MAJOR=${CARMA_VERSION_MAJOR}
+            CARMA_VERSION_MINOR=${CARMA_VERSION_MINOR}
+            CARMA_VERSION_PATCH=${CARMA_VERSION_PATCH}
+            CARMA_VERSION_NAME=${CARMA_VERSION_INFO})
+set_target_properties(carma PROPERTIES CXX_STANDARD_REQUIRED ON)
+
+target_compile_options(carma INTERFACE -Wall -Wextra -Wunused-variable
+                                       -Wunused-const-variable)
+if(CARMA_ENABLE_EXTRA_DEBUG)
+  target_compile_definitions(carma INTERFACE CARMA_EXTRA_DEBUG=true
+                                             CARMA_DEBUG=true)
+  set(ignoreMe "${CARMA_ENABLE_DEBUG}")
+elseif(CARMA_ENABLE_DEBUG)
+  target_compile_definitions(carma INTERFACE CARMA_DEBUG=true)
+endif()
+
+target_include_directories(
+  carma INTERFACE $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+                  ${ARMADILLO_INCLUDE_DIRS})
+
+target_link_libraries(carma INTERFACE ${ARMADILLO_LIBRARIES} pybind11::pybind11
+                                      Python3::NumPy Python3::Module)
+
+add_executable(main ${PROJECT_SOURCE_DIR}/src/main.cpp)
+
+target_link_libraries(main carma pybind11::embed)
+
+install(TARGETS main DESTINATION "${PROJECT_SOURCE_DIR}/bin")
diff --git a/CMakeLists_bu.txt b/CMakeLists_bu.txt
new file mode 100644
index 0000000..94e768e
--- /dev/null
+++ b/CMakeLists_bu.txt
@@ -0,0 +1,228 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 3.16)
+
+SET(CARMA_VERSION_MAJOR 0)
+SET(CARMA_VERSION_MINOR 6)
+SET(CARMA_VERSION_PATCH 6)
+SET(CARMA_VERSION_INFO "${CARMA_VERSION_MAJOR}.${CARMA_VERSION_MINOR}.${CARMA_VERSION_PATCH}")
+
+PROJECT(
+    carma
+    VERSION ${CARMA_VERSION_INFO}
+    LANGUAGES CXX
+)
+INCLUDE(GNUInstallDirs)
+
+SET(CMAKE_MODULE_PATH_SAVED ${CMAKE_MODULE_PATH})
+LIST(INSERT CMAKE_MODULE_PATH 0 "${PROJECT_SOURCE_DIR}/cmake")
+# ##############################################################################
+#                                   SETTINGS                                   #
+# ##############################################################################
+OPTION(CARMA_INSTALL_LIB "Install CARMA headers" OFF)
+SET(CARMA_INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_INCLUDEDIR}/carma")
+
+SET(DEFAULT_BUILD_TYPE "Release")
+# Set build type to Release if not specified
+INCLUDE(BuildType)
+
+IF (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+    # workaround like https://github.com/nlohmann/json/issues/1408
+    # to avoid error like: carma\...\include\armadillo_bits/arma_str.hpp(194):
+    # error C2039: '_snprintf': is not a member of 'std'
+    ADD_DEFINITIONS(-DHAVE_SNPRINTF)
+ENDIF ()
+
+OPTION(CARMA_DEV_MODE "Enable additional definitions for development" OFF)
+OPTION(CARMA_DEV_DEBUG_MODE "Turn on all debugging definitions" OFF)
+OPTION(CARMA_BUILD_TESTS "Build tests for carma" OFF)
+OPTION(CARMA_BUILD_EXAMPLES "Build examples for carma" OFF)
+
+# collect user settable options
+INCLUDE(${PROJECT_SOURCE_DIR}/carma_config.cmake)
+INCLUDE(ParseOptions)
+CONFIGURE_FILE(
+    ${PROJECT_SOURCE_DIR}/include/carma_bits/config.h.in
+    ${PROJECT_BINARY_DIR}/include/carma_bits/generated_config.h
+    @ONLY
+)
+
+# ##############################################################################
+#                                   TARGET                                     #
+# ##############################################################################
+ADD_LIBRARY(carma INTERFACE)
+ADD_LIBRARY(carma::carma ALIAS carma)
+
+TARGET_COMPILE_DEFINITIONS(carma
+    INTERFACE
+    CARMA_USE_GENERATED_CONFIG=1
+    CARMA_VERSION_MAJOR=${CARMA_VERSION_MAJOR}
+    CARMA_VERSION_MINOR=${CARMA_VERSION_MINOR}
+    CARMA_VERSION_PATCH=${CARMA_VERSION_PATCH}
+    CARMA_VERSION_NAME=${CARMA_VERSION_INFO}
+    "$<$<CONFIG:RELEASE>:${CARMA_RELEASE_DEFINITIONS}>"
+)
+TARGET_COMPILE_FEATURES(carma INTERFACE cxx_std_14)
+
+IF(CARMA_DEV_MODE)
+    TARGET_COMPILE_OPTIONS(carma
+        INTERFACE
+        -Wall
+        -Wextra
+        -Wunused-variable
+        -Wunused-const-variable
+    )
+ENDIF()
+
+TARGET_INCLUDE_DIRECTORIES(carma
+    INTERFACE
+    $<INSTALL_INTERFACE:${CARMA_INCLUDE_INSTALL_DIR}>
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+    $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
+)
+
+TARGET_LINK_LIBRARIES(carma
+    INTERFACE
+        armadillo::armadillo
+        Python3::NumPy
+        Python3::Module
+        pybind11::pybind11
+)
+
+ADD_LIBRARY(carma_headers INTERFACE)
+ADD_LIBRARY(carma::headers ALIAS carma_headers)
+
+TARGET_COMPILE_DEFINITIONS(carma_headers
+    INTERFACE
+    CARMA_VERSION_MAJOR=${CARMA_VERSION_MAJOR}
+    CARMA_VERSION_MINOR=${CARMA_VERSION_MINOR}
+    CARMA_VERSION_PATCH=${CARMA_VERSION_PATCH}
+    CARMA_VERSION_NAME=${CARMA_VERSION_INFO}
+)
+TARGET_COMPILE_FEATURES(carma_headers INTERFACE cxx_std_14)
+
+TARGET_INCLUDE_DIRECTORIES(carma_headers
+    INTERFACE
+    $<INSTALL_INTERFACE:${CARMA_INCLUDE_INSTALL_DIR}>
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+    $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
+)
+    
+
+# Only install the headers
+IF (CARMA_INSTALL_LIB)
+    # modified from https://dominikberner.ch/cmake-interface-lib/
+
+    # locations are provided by GNUInstallDirs
+    INSTALL(
+        TARGETS carma
+        EXPORT carma_Targets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    )
+
+    INSTALL(
+        TARGETS carma_headers
+        EXPORT carma_Header_Targets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    )
+    
+    INCLUDE(CMakePackageConfigHelpers)
+    write_basic_package_version_file(
+        "carmaConfigVersion.cmake"
+        VERSION ${PROJECT_VERSION}
+        COMPATIBILITY SameMinorVersion
+    )
+    
+    configure_package_config_file(
+        "${PROJECT_SOURCE_DIR}/cmake/carmaConfig.cmake.in"
+        "${PROJECT_BINARY_DIR}/carmaConfig.cmake"
+        INSTALL_DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
+    )
+
+    INSTALL(
+      EXPORT carma_Targets
+      FILE carmaCarmaTargets.cmake
+      NAMESPACE carma::
+      DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
+    )
+
+    INSTALL(
+      EXPORT carma_Header_Targets
+      FILE carmaHeaderTargets.cmake
+      NAMESPACE carma::
+      DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
+    )
+
+    INSTALL(
+        FILES
+            "${PROJECT_BINARY_DIR}/carmaConfig.cmake"
+            "${PROJECT_BINARY_DIR}/carmaConfigVersion.cmake"
+            "${PROJECT_SOURCE_DIR}/cmake/carmaDependencyTargets.cmake"
+        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/carma/cmake
+    )
+
+    INSTALL(
+        FILES "${PROJECT_SOURCE_DIR}/include/carma"
+        DESTINATION ${CARMA_INCLUDE_INSTALL_DIR}
+    )
+
+    INSTALL(
+        DIRECTORY ${PROJECT_SOURCE_DIR}/include/carma_bits
+        DESTINATION ${CARMA_INCLUDE_INSTALL_DIR}
+        FILES_MATCHING
+            PATTERN "*.h"
+    )
+
+     INSTALL(
+        FILES ${PROJECT_BINARY_DIR}/include/carma_bits/generated_config.h 
+        DESTINATION ${CARMA_INCLUDE_INSTALL_DIR}/carma_bits
+     )
+    
+ELSE()
+    # ##############################################################################
+    #                                REQUIREMENTS                                  #
+    # ##############################################################################
+    FIND_PACKAGE(Python3 COMPONENTS Development NumPy QUIET)
+    IF (NOT Python3_FOUND)
+        FIND_PACKAGE(Python3 COMPONENTS Development.Module NumPy REQUIRED)
+    ENDIF()
+
+    # Needed to ensure the same Python executable is found by Pybind11
+    IF (NOT DEFINED PYTHON_EXECUTABLE)
+        SET(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
+    ENDIF ()
+
+    # create armadillo and or pybind11 target if not defined
+    INCLUDE(ThirdPartyTargets)
+
+    TARGET_PRECOMPILE_HEADERS(carma
+        INTERFACE
+            ${PROJECT_SOURCE_DIR}/include/carma_bits/cnalloc.h
+    )
+ENDIF()
+# ##############################################################################
+#                              TEST TARGETS                                    #
+# ##############################################################################
+
+IF(CARMA_BUILD_TESTS OR CARMA_BUILD_EXAMPLES)
+    SET(CMAKE_CXX_STANDARD 14)
+ENDIF()
+
+IF(CARMA_BUILD_TESTS)
+    INCLUDE(CTest)
+    ENABLE_TESTING()
+    INCLUDE(GetCatch2)
+    ADD_SUBDIRECTORY(tests)
+    INCLUDE(ClangFormatTarget)
+    INCLUDE(CoverageTarget)
+ENDIF()
+
+IF(CARMA_BUILD_EXAMPLES)
+    ADD_SUBDIRECTORY(examples)
+ENDIF()
+#------------------------------------------------------
+INCLUDE(ClearOptions)
+SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH_SAVED})
+UNSET(CMAKE_MODULE_PATH_SAVED)
diff --git a/mbuild.sh b/mbuild.sh
new file mode 100755
index 0000000..3c42880
--- /dev/null
+++ b/mbuild.sh
@@ -0,0 +1,10 @@
+cmake -S . -G Ninja -B build \
+    -DCARMA_ENABLE_DEBUG=true \
+    -DCARMA_ENABLE_EXTRA_DEBUG=true \
+    -DCMAKE_OSX_DEPLOYMENT_TARGET=13.3 \
+    -DCMAKE_BUILD_TYPE=Debug \
+    -DPython3_EXECUTABLE=$(python3 -c 'import sys; print(sys.executable)') \
+    -Dpybind11_ROOT=$(pybind11-config --cmakedir) \
+    -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
+
+cmake --build build --target install --parallel 2
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..dbe2de4
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,118 @@
+// #define ARMA_EXTRA_DEBUG true
+// #define CARMA_EXTENSION_MODE
+
+#include <pybind11/embed.h>
+#include <pybind11/numpy.h>
+#include <pybind11/pybind11.h>
+
+#define CARMA_DEFAULT_MEMORY_ORDER carma::TransposedRowOrder
+#include <carma>
+#include <random>
+// block reordering
+#include <armadillo>
+#include <iostream>
+
+namespace py = pybind11;
+
+int main() {
+    py::scoped_interpreter guard{};
+
+    py::module_ sys = py::module_::import("sys");
+    sys.attr("path").attr("append")("/Users/rurlus/.pyenv/versions/3.10.9/envs/CARMA/lib/python3.10/site-packages");
+
+    py::module np = py::module::import("numpy");
+    py::module np_rand = py::module::import("numpy.random");
+    py::array_t<double> arr = np_rand.attr("normal")(0, 1, py::make_tuple(10, 10));
+    py::array_t<double> carr = py::array_t<double>(arr);
+    py::array_t<double> farr = py::array_t<double, py::array::f_style | py::array::forcecast>(arr);
+
+    std::cout << "carma version: " << carma::carma_version().as_string() << "\n";
+
+    // using config = carma::NumpyConversionConfig<carma::MoveConverter, carma::CopyResolution,
+    // carma::TransposedRowOrder>; using my_custom_converter = carma::NumpyConverter<arma::Mat<double>,
+    // py::array_t<double>&&, config>; auto mat = my_custom_converter()(std::move(arr)); auto mat2 =
+    // my_custom_converter()(std::move(farr));
+    //
+    auto mat = carma::arr_to_mat(arr);
+    auto mat2 = carma::arr_to_mat(std::move(farr));
+
+    // auto mat = my_custom_converter()(std::move(arr));
+    // auto mat2 = my_custom_converter()(std::move(farr));
+
+    // py::array_t<double> farr = fArr(np_rand.attr("normal")(0, 1, py::make_tuple(2, 100)));
+    // mat = carma::arr_to_mat(farr);
+
+    // auto dtype = py::detail::npy_format_descriptor<double>::dtype();
+
+    // using config = carma::ConversionConfig<carma::ViewConverter, carma::RaiseResolution, carma::TransposedRowOrder>;
+    // using my_custom_converter = carma::npConverter<const arma::Mat<double>, const py::array_t<double>&, config>;
+    // auto mat = my_custom_converter()(arr);
+
+    // auto mat = carma::arr_to_mat(carr);
+
+    // std::cout << "arr second element: " << *((const double*)(arr.data(0, 1)))
+    // << "\n"; std::cout << "mat second element: " << mat.at(1, 0) << "\n";
+    // mat.at(1, 0) = -1.111111;
+    // std::cout << "arr second element: " << *((const double*)(arr.data(0, 1)))
+    // << "\n"; std::cout << "mat second element: " << mat.at(1, 0) << "\n";
+
+    // auto my_custom_converter2 = carma::npConverter<py::array_t<double>,
+    // arma::Mat<double>, config>(); auto mat2 = my_custom_converter2(arr);
+
+    std::cout << "n_rows: " << mat.n_rows << "\n";
+    std::cout << "n_cols: " << mat.n_cols << "\n";
+    std::cout << "n_elem: " << mat.n_elem << "\n";
+    std::cout << "arr second element: " << arr.at(0, 1) << "\n";
+    std::cout << "mat second element: " << mat.at(0, 1) << "\n";
+    std::cout << mat << "\n";
+
+    // using config = carma::ConversionConfig<carma::ViewConverter,
+    // carma::CopyResolution, carma::ColumnOrder>; auto converter =
+    // carma::npConverter<arma::Mat<double>, const py::array_t<double>&,
+    // config>();
+    // // auto view = carma::internal::ArrayView(arr);
+    // // carma::ColumnOrder().check<arma::Mat<double>>(view);
+    // // auto mat = carma::ViewConverter().get<arma::Mat<double>>(view);
+    // auto mat = carma::to_arma<const arma::Mat<double>>(arr);
+    // auto mat = carma::arr_to_mat(arr);
+    // auto mat0 = carma::to_arma<arma::Mat<double>>(arr);
+    // auto mat1 = carma::to_arma<arma::Mat<double>>(std::move(arr));
+    // auto mat2 = carma::to_arma<arma::Mat<double>>(carr);
+
+    // using config = carma::ConversionConfig<carma::BorrowConverter>;
+    // auto converter = carma::npConverter<arma::Mat<double>, const
+    // py::array_t<double>&, config>(); auto converter =
+    // carma::internal::npConverterImpl<arma::Mat<double>, carma::MoveConverter,
+    // carma::CopyResolution,
+    //                                                   carma::ColumnOrder>();
+    // auto converter = carma::internal::toArma<arma::Mat<double>>();
+    // auto mat2 = converter(carr);
+    // auto mat2 = carma::to_arma<arma::Mat<double>>(std::move(arr));
+    // using config = carma::ConversionConfig<carma::MoveConverter>;
+    // auto converter = carma::npConverter<arma::Mat<double>,
+    // py::array_t<double>&&, config>(); auto mat = converter(std::move(arr));
+
+    // auto mat = carma::internal::arr_to_mat<double, py::array_t<double>>(arr);
+    // auto mat = carma::internal::toArma<arma::Mat<double>>()(arr);
+
+    // using config = carma::ConversionConfig<carma::ViewConverter>;
+    // auto converter = carma::npConverter<arma::Mat<double>, const
+    // py::array_t<double>&, config>();
+    // // auto converter = carma::internal::toArma<arma::Mat<double>, const
+    // py::array_t<double>&>(); auto mat2 = converter(arr);
+    // // FIXME add more checks
+    // carma::static_conversion_assert(arr, mat2, converter);
+
+    // auto mat = converter(arr);
+    // auto mat = converter(arr);
+    // carma::static_conversion_assert(arr, mat, converter);
+
+    // auto mat = carma::arr_to_mat<double>(arr);
+    // std::cout << mat << "\n";
+    // std::cout << "arr second element: " << arr.at(0, 1) << "\n";
+    // std::cout << "mat second element: " << mat.at(0, 1) << "\n";
+    // mat.at(0, 1) = 2.0;
+    // std::cout << "arr second element: " << arr.at(0, 1) << "\n";
+    // std::cout << "mat second element: " << mat.at(0, 1) << "\n";
+    return 0;
+};