Dear erald Henriksen:

>I can see from the download.gnome.org site, that they have gtk+-3.5.4, and
>the Fedora koji repository only has gtk+-1.2.10-72 ...

Fedora has packages for gtk+ 1, 2 and 3.

Search koji for gtk3 (the rpm name for the gtk+-3* versions).

I did not know or understand that gtk3 was the version of gtk+ 3...

--
Sincerely yours,
Rob G. Healey