MarsSeed [1] filed a deletion request for python-atpy [2]: I suggest to delete this Python module discontinued in 2013. Already at that point, developer wrote in description: "Please Note Much of ATpy’s functionality has now been incorporated into (Astropy), and while we will continue to fix bugs, we are no longer actively developing new features in ATpy, instead focusing our efforts on Astropy." Which means that the developers of ATpy have joined up with the upstream Astropy team and incorporated ATpy's features into that. Also, they have not continued to fix bugs or keep this separate module tested and compatible with newer Python releases. Safe to delete, as only python-pyspeckit declares it as optdepend, and it also can use Astropy directly instead of ATpy. (I've notified the maintainer that this optdepend is no longer needed.) [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-atpy/