USE AT YOUR OWN RISK!!!
archlinux PKGBUILD's for gnome-git based on extra repository.
for buildinstuctions check: https://wiki.archlinux.org/index.php/DeveloperWiki:Building_in_a_Clean_Chroot
USE AT YOUR OWN RISK!!!
PS: CORE-BUILDORDER is the order i used... allthough it might not be complete it worked nicely for me...