MarsSeed [1] filed a deletion request for python-gatspy [2]: Abandoned since 2021. Packaging is now broken.
Upstream's last release was in 2016. [a] Likely because these algorithms have been incorporated into python-astroml. [a]: https://pypi.org/project/gatspy [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-gatspy/
