Unfortunately, the Android app requires Play Services to compile even if not to run, which means F-Droid can’t include it by their own free software requirement

Unfortunately, the Android app requires Play Services to compile even if not to run, which means F-Droid can’t include it by their own free software requirements. See the forum thread: https://forum.f-droid.org/t/signal-discussion-about-google-play-alternative/95/31 https://forum.f-droid.org/t/signal-discussion-about-google-p... Building it reproducibly and with 100% FOSS is very hard and you can’t fork it, otherwise they’ll stop you from using the official servers.