I did for a while and I got some stuff to run pretty easily! I actually really liked the way pamac and pacman work but then I started getting a bunch of errors about a corrupt database. I found a way to fix it for pacman but pamac was still broken and I could not for the life of me figure out how to fix it so I took the noob route and ran back to Debian lol
I was told by the dev of this game that the fdroid version isn’t official and it’s a couple releases behind! You can get the latest one without using the play store here https://github.com/00-Evan/shattered-pixel-dungeon/releases