eschwartz [1] filed a orphan request for muffin-git [2]:

building in clean chroot is broken due to missing makedepends, cogl is dropped upstream as a depends, deprecated post-install scripts, maintainer has not been active since initially uploading 7 cinnamon- related packages to the AUR 4 migration and the other six all have pending orphan requests due to build issues/inactivity/etc.

[1] https://aur.archlinux.org/account/eschwartz/ [2] https://aur.archlinux.org/pkgbase/muffin-git/