Added a default installation of pystencils/pystencilssfg if no

requirements.txt is present

src/pystencilssfg/cmake/FindPystencilsSfg.cmake

@@ -27,7 +27,7 @@ if(NOT DEFINED CACHE{PystencilsSfg_PYTHON_INTERPRETER})
         set( _sfg_cache_python_init ${PystencilsSfg_PYTHON_PATH} )
 
     elseif (CODEGEN_PRIVATE_VENV)
-        #   ... or create own venv ...
+        #   ... or create an own venv ...
 
         set(CODEGEN_VENV_PATH ${CMAKE_CURRENT_BINARY_DIR}/codegen-venv CACHE PATH "Location of the virtual environment used for code generation")
         set(_venv_python_exe ${CODEGEN_VENV_PATH}/bin/python)
@@ -44,14 +44,26 @@ if(NOT DEFINED CACHE{PystencilsSfg_PYTHON_INTERPRETER})
                 )
             endif()
 
-            message( STATUS "Installing required Python packages..." )
 
-            set(CODEGEN_VENV_REQUIREMENTS ${PROJECT_SOURCE_DIR}/requirements.txt CACHE PATH "Location of the requirements installed in the virtual environment used for code generation")
-            execute_process(
-            COMMAND ${_venv_python_exe} -m pip install -r ${CODEGEN_VENV_REQUIREMENTS}
-            OUTPUT_QUIET
-            )
-            #TODO automatically install pystencilssfg/pystencils
+            set(CODEGEN_VENV_REQUIREMENTS ${PROJECT_SOURCE_DIR}/requirements.txt CACHE FILEPATH "Location of the requirements installed in the virtual environment used for code generation")
+            if (EXISTS ${CODEGEN_VENV_REQUIREMENTS})
+                message( STATUS "Installing required Python packages from ${CODEGEN_VENV_REQUIREMENTS}" )
+                execute_process( COMMAND ${_venv_python_exe} -m pip install -r ${CODEGEN_VENV_REQUIREMENTS} OUTPUT_QUIET)
+            else()
+                set(Pystencils_URL "git+https://i10git.cs.fau.de/pycodegen/pystencils.git@v2.0-dev" CACHE STRING "Location of pystencils to installed in the virtual environment used for code generation")
+                set(PystencilsSfg_URL "git+https://i10git.cs.fau.de/pycodegen/pystencils-sfg.git" CACHE STRING "Location of pystencils-sfg to installed in the virtual environment used for code generation")
+
+                message( STATUS "Installing required Pystencils from ${Pystencils_URL}" )
+                execute_process(
+                    COMMAND ${_venv_python_exe} -m pip install "${Pystencils_URL}"
+                    OUTPUT_QUIET
+                )
+                message( STATUS "Installing required Pystencils-sfg from ${PystencilsSfg_URL}" )
+                execute_process(
+                    COMMAND ${_venv_python_exe} -m pip install "${PystencilsSfg_URL}"
+                    OUTPUT_QUIET
+                )
+            endif()
 
             set( _sfg_private_venv_done TRUE CACHE BOOL "" )
             mark_as_advanced(_sfg_private_venv_done)

tests/integration/test_cmake.py

@@ -18,7 +18,7 @@ def test_cmake_project(tmp_path, config_source):
     result = subprocess.run(obtain_find_module_cmd, cwd=CMAKE_PROJECT_DIR)
     assert result.returncode == 0
 
-    cmake_configure_cmd = ["cmake", "-S", CMAKE_PROJECT_DIR, "-B", str(tmp_path)]
+    cmake_configure_cmd = ["cmake", "-S", CMAKE_PROJECT_DIR, "-B", str(tmp_path), "-DCODEGEN_PRIVATE_VENV=OFF"]
     if config_source is not None:
         cmake_configure_cmd.append(f"-D{config_source}=ON")
     configure_result = subprocess.run(cmake_configure_cmd)
@@ -49,3 +49,14 @@ def test_cmake_project(tmp_path, config_source):
     custom_dir_output = tmp_path / "my-output" / "CustomDirTest.hpp"
     assert custom_dir_output.exists()
     assert "#define NOTHING" in custom_dir_output.read_text()
+
+
+def test_cmake_project_autoinstall(tmp_path):
+    obtain_find_module_cmd = ["sfg-cli", "cmake", "make-find-module"]
+
+    result = subprocess.run(obtain_find_module_cmd, cwd=CMAKE_PROJECT_DIR)
+    assert result.returncode == 0
+
+    cmake_configure_cmd = ["cmake", "-S", CMAKE_PROJECT_DIR, "-B", str(tmp_path), "-DCODEGEN_PRIVATE_VENV=ON"]
+    configure_result = subprocess.run(cmake_configure_cmd)
+    assert configure_result.returncode == 0