MarsSeed [1] filed a deletion request for trelby [2]: Development of this software has been discontinued since 2016 [a], and it fails to compile as last user comment from a year ago states.
Better to delete. There are very good, newer and working alternatives. [a]: https://github.com/trelby/trelby [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/trelby/
