Python is installed by default on all linux and mac systems, so it's just one more command to install pipx. From there just pipx install tagify. You don't need an installer, just specify the build tools in pyproject.toml: https://packaging.python.org/en/latest/specifications/pyproject-toml/#declaring-build-system-dependencies-the-build-system-table e.g. with setuptools: https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html

If you publish to pypi it will build the wheel files when you publish a version. That's the easiest way I know.

Innosetup is windows only. On linux you don't need such a thing.