uv does work only in VIRTUAL_ENV

Makefile

@@ -220,6 +220,11 @@ ifeq ($(shell [[ "$(VENV_ENABLED)" == "true" && "$(VENV_FOLDER)" == "" ]] && ech
 $(error "VENV_FOLDER must be configured if VENV_ENABLED is true")
 endif
 
+# Check if global python is used with uv (this is not supported by uv)
+ifeq ("$(VENV_ENABLED)$(PYTHON_PACKAGE_INSTALLER)","falseuv")
+$(error "Package installer uv does not work with a global Python interpreter.")
+endif
+
 # Determine the executable path
 ifeq ("$(VENV_ENABLED)", "true")
 export PATH:=$(abspath $(VENV_FOLDER))/bin:$(PATH)

src/mxmake/tests/test_templates.py

@@ -677,6 +677,11 @@ def test_Makefile(self, tempdir):
                 $(error "VENV_FOLDER must be configured if VENV_ENABLED is true")
                 endif
 
+                # Check if global python is used with uv (this is not supported by uv)
+                ifeq ("$(VENV_ENABLED)$(PYTHON_PACKAGE_INSTALLER)","falseuv")
+                $(error "Package installer uv does not work with a global Python interpreter.")
+                endif
+
                 # Determine the executable path
                 ifeq ("$(VENV_ENABLED)", "true")
                 export PATH:=$(abspath $(VENV_FOLDER))/bin:$(PATH)

src/mxmake/topics/core/mxenv.mk

@@ -91,6 +91,11 @@ ifeq ($(shell [[ "$(VENV_ENABLED)" == "true" && "$(VENV_FOLDER)" == "" ]] && ech
 $(error "VENV_FOLDER must be configured if VENV_ENABLED is true")
 endif
 
+# Check if global python is used with uv (this is not supported by uv)
+ifeq ("$(VENV_ENABLED)$(PYTHON_PACKAGE_INSTALLER)","falseuv")
+$(error "Package installer uv does not work with a global Python interpreter.")
+endif
+
 # Determine the executable path
 ifeq ("$(VENV_ENABLED)", "true")
 export PATH:=$(abspath $(VENV_FOLDER))/bin:$(PATH)