I see from https://bugzilla.redhat.com/show_bug.cgi?id=1207485
Fedora might want to add the language Guarani(gn) soon.
I found an old request to add 'gn' to Transifex, which stalled due to
lack of confirmed information . Just for reference, here is an
archived copy of Transifex's old guide for adding languages .
I would recommend that something be added to Fedora's L10n FAQ item for
adding languages , to make sure the language's plural forms are
formally documented and put into Zanata, unless they are already there.
To add a new language to Zanata, we need to know the English name, the
native name of the locale and the rules for plural forms as used in
gettext PO headers, such as:
"Plural-Forms: nplurals=2; plural=(n != 1);\n".a
The Zanata team normally gets plural information from The Translate
Project  and tries to get any new information pushed upstream. So
please make sure your language information appears on that page.
If the language (or its plural forms) need to be added to Zanata, a
bugzilla request is probably best .
Note: as of Zanata 3.5/3.6, we have to push a new release of Zanata to
add new plural forms, although this should change in Zanata 3.7: .
Principal Software Engineer
Localisation Tools Engineering