Change the way we get Python installs

CuraVersion.py.jinja

@@ -1,6 +1,8 @@
 # Copyright (c) 2023 UltiMaker
 # Cura is released under the terms of the LGPLv3 or higher.
 
+import importlib.metadata
+
 CuraAppName = "{{ cura_app_name }}"
 CuraAppDisplayName = "{{ cura_app_display_name  }}"
 CuraVersion = "{{ cura_version }}"
@@ -14,4 +16,3 @@ CuraDigitalFactoryURL = "{{ cura_digital_factory_url }}"
 CuraLatestURL = "{{ cura_latest_url }}"
 
 ConanInstalls = {{ conan_installs }}
-PythonInstalls = {{ python_installs }}

conanfile.py

@@ -140,26 +140,6 @@ class CuraConan(ConanFile):
             }
         return conan_installs
 
-    def _python_installs(self):
-        self.output.info("Collecting python installs")
-        python_installs = {}
-
-        outer = '"' if self.settings.os == "Windows" else "'"
-        inner = "'" if self.settings.os == "Windows" else '"'
-        buffer = StringIO()
-        env_path = str(self._root_dir.joinpath("conanrun"))
-        self.run(f"""python -c {outer}import importlib.metadata;  print({inner};{inner}.join([(package.metadata[{inner}Name{inner}]+{inner},{inner}+    package.metadata[{inner}Version{inner}]) for package in importlib.metadata.distributions()])){outer}""",
-                 env = env_path,
-                 stdout = buffer)
-
-        packages = str(buffer.getvalue()).strip('\r\n').split(";")
-        for package in packages:
-            name, version = package.split(",")
-            python_installs[name] = {"version": version}
-
-        print(python_installs)
-        return python_installs
-
     def _generate_cura_version(self, location):
         with open(os.path.join(self.recipe_folder, "CuraVersion.py.jinja"), "r") as f:
             cura_version_py = Template(f.read())
@@ -188,7 +168,6 @@ class CuraConan(ConanFile):
                 cura_digital_factory_url = self.conan_data["urls"][self._urls]["digital_factory_url"],
                 cura_latest_url=self.conan_data["urls"][self._urls]["cura_latest_url"],
                 conan_installs=self._conan_installs(),
-                python_installs=self._python_installs(),
             ))
 
     def _generate_pyinstaller_spec(self, location, entrypoint_location, icon_path, entitlements_file, cura_source_folder):

cura/__init__.py

@@ -0,0 +1,4 @@
+import importlib.metadata
+from . import CuraVersion
+
+CuraVersion.PythonInstalls = {package.metadata['Name']: {'version': package.metadata['Version']} for package in importlib.metadata.distributions()}