micwoj92 [1] filed a deletion request for dia [2]: Build of this package fails, there have been comments about this since 2022. They have solutions provided in comments, but the package is orphaned and noone cared to fix this package. There are no new upstream releases in 11 years
[1] https://aur.archlinux.org/account/micwoj92/ [2] https://aur.archlinux.org/pkgbase/dia/
