tazz4843 [1] filed an orphan request for regionset [2]: Package appears to have been broken since 2025 according to https://aur.archlinux.org/packages/regionset#comment-1076625 and the latest snapshot on IA, maintainer has not replied within the two week period at this point.
[1] https://aur.archlinux.org/account/tazz4843/ [2] https://aur.archlinux.org/pkgbase/regionset/
