Build addons without having Blender (with blender_ext.py)

When developing an addon, Blender is obviously needed, but I would like to set up a build pipeline.

It would be nice to be able to build without having to download the entire Blender software.

My ideas are either:

• Providing blender_ext.py in a separate, pip installable python package.
• Making blender_ext.py accessible through Python when bpy is installed as a Python package.

The latter would not be ideal, as the bpy package is still several hundred Mo.

It should be fairly easy, as blender_ext.py does not require any external library, including bpy .

The script:

projects.blender.org/blender/blender/src/branch/main/scripts/addons_core/bl_pkg/cli/blender_ext.py

The build command:

docs.blender.org/manual/en/latest/advanced/command_line/extension_arguments.html