Product pages like yours https://github.com/vitorpamplona/amethyst should really highlight that straight APKs from Obtainium or GitHub or whatever are the preferred download.

Because of different signatures the app source can't be easily changed later, it requires a reinstall with migrating data from the old to the new install, which can be a hassle.

Ran into this the other day wanting to install SimpleX from GitHub after originally getting it from Google Play.