FredBezies [1] filed a deletion request for feather [2]:
Dead upstream. You can read on github page :
A Lightweight Window Manager (abandoned)
[1] https://aur.archlinux.org/account/FredBezies/ [2] https://aur.archlinux.org/pkgbase/feather/
Request #5248 has been accepted by Muflone [1].
aur-requests@lists.archlinux.org