Install our appdata file to $(datadir)/metainfo as that change was made a long time ago
Review Request #607 — Created April 9, 2021 and submitted — Latest diff uploaded
This patch originates from Lars Wendler from Gentoo
https://gitweb.gentoo.org/repo/gentoo.git/commit/net-im/pidgin/files/pidgin-2.13.0-metainfo.patch?id=2dd6c1852251b5b67c3045badf173be9535b97a9
Installed to a prefix and verified the file ended up in
$prefix/share/metainfo