MarsSeed [1] filed a deletion request for ghc8.0 [2]: Unneeded legacy ghc version from January 2017, with python2 based check(). Nothing depends on it. AUR has newer versioned legacy v8.x ghc packages that do have downstream consumers. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ghc8.0/