twa022 [1] filed a deletion request for xfconf4.12 [2]: Out-dated version. All packages in extra should now be linked against 4.14.x, and any other packages should be built against 4.14.x not 4.12. [1] https://aur.archlinux.org/account/twa022/ [2] https://aur.archlinux.org/pkgbase/xfconf4.12/