MarsSeed [1] filed a deletion request for julia-git [2]: Make this with makedepend 'llvm-julia' and depend 'llvm-julia-libs', not llvm15 / llvm15-libs that have been dropped from Arch repos.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/julia-git/
