MarsSeed [1] filed a deletion request for camfr [2]: Complex scientific computation software, abandoned package since 2017. Reported broken since 2020. VCS package in disguise. But the used fork is discontinued since 2017. [a] Still uses python2 and its numpy, matplotlib and scipy. I recommend deletion, because of its extremely niche nature, and because of lack of maintenance. [a]: https://github.com/jtambasco/camfr [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/camfr/