MarsSeed [1] filed a deletion request for python-theano-git [2]: Discontinued in 2020. Forked by the PyMC project, they've created and published a new module named Aesara, based on the original Theano. AUR still carries the last stable python-theano legacy package. No need for a VCS build anymore. Safe to delete this. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-theano-git/