grubber [1] filed a request to merge gzdoom-legacy [2] into gzdoom [3]: The legacy branch of GZDoom is no longer being developed, last update was almost 2 years ago.
[1] https://aur.archlinux.org/account/grubber/ [2] https://aur.archlinux.org/pkgbase/gzdoom-legacy/ [3] https://aur.archlinux.org/pkgbase/gzdoom/