FabioLolix [1] filed a deletion request for mutationpp-git [2]: Cleanup of mutationpp-git and coolfluid-svn, both this pkgbuilds had a dependency on a non existing package (eigen3 recently uploaded) for years and are one time effort in 2018-08 or 2018-09. mutationpp-git source and website not reachable for me, flagged OOD for 2+ years and orphaned [1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/mutationpp-git/