Latest gettext already ships the following files: /usr/share/gettext-0.19.8/its/appdata.loc /usr/share/gettext-0.19.8/its/appdata.its But these only describe how to handled translation of *.appdata.xml files, lacking rules for newer *.metainfo.xml files. For handling metainfo files, we currently need to have a build dependency on appstream-glib, which in turn pulls in gtk+:3 and so on, just because we are missing a couple lines from the gettext appdata.loc file, and perhaps in some cases from appdata.its file. To see what I mean, install appstream-glib and compare the following files with eachother: diff -u --color=auto /usr/share/gettext-0.19.8/its/appdata.loc /usr/share/gettext/its/appdata.loc diff -u --color=auto /usr/share/gettext-0.19.8/its/appdata.its /usr/share/gettext/its/appdata.its If gettext version of them would be updated (I suspect their version control has it - they just haven't released for years...), we'd stop needing to add an explicit appstream-glib build dep on various packages just for the .loc data file and just depend on that newer gettext revision instead (we need to depend on some gettext version anyways) - especially with meson based builds. As-is, we need to add appstream-glib build depend if it has any metainfo.xml files in translation (i18n.merge_file), but not appdata.xml (as gettext ships rules for it) UNLESS developer_name tag is used, which doesn't have a rule in current gettext appdata.its.. Having this handled in gettext would be much preferable to having to split out the two tiny data files from appstream-glib into some appstream-glib-data package, especially if some upcoming gettext release would update its own copies anyways.
For more context: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=47a950b00c6db3 https://bugs.gentoo.org/671850#c11
Here's the relevant upstream change, although as Mart pointed out in IRC, it seems to be incomplete: http://git.savannah.gnu.org/cgit/gettext.git/commit/?id=ac5c1120096808a94bdeeb5319129d0d139a6d3a
Some additional tags in the ITS file of newer appstream-glib: /component/releases/release/description /component/agreement/agreement_section/name /component/agreement/agreement_section/description
