FabioLolix [1] filed a deletion request for galaxy-desktop-git [2]: No one seems to use this; neither the packager/developer. No votes, last commit upstream on 18 Apr 2018, never builded in chroot since git is missing as makedepends, from github readme "Be warned: Most likely you do not want to use this."
[1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/galaxy-desktop-git/
