When using Github pages to host Sphinx documentation, it might be desirable to host multiple versions of the same documentation for different branches or tag of the code.
However, both sphinxcontrib-multiversion and sphinxcontrib-versioning are not actively maintained and they do not work with the latest version of Sphinx.
If one does not want to use ReadTheDocs, and want to stick to the Alabaster theme, what would be the right solution ?