The best information I can find on getting Guix on the Raspberry Pi is the issues page for nonguix https://gitlab.com/nonguix/nonguix/-/issues/128

It’s based on the stats found here. https://repology.org/repositories/statistics/total

Take a look at this Guix blog post. https://guix.gnu.org/en/blog/2022/keeping-ones-home-tidy/

The new app bundles format is a worrying trend! If it’s truly exclusive to the Play Store and can’t be brought to Aurora Store or the Android package installer somehow and APKs start to fizzle out, users of degoogled Android ROMs are going to suffer. If some big name apps are only available as AABs then tough luck.

AnySoft is pretty great! I especially like that it has the ability to swype. It may not be the best but it’s the only open source keyboard I know that has that capability.