yochananmarqos [1] filed a deletion request for musescore-dev [2]: This should have been submitted as a VCS package to begin with. Either way, there is currently no dev branch and this is using the master branch. [1] https://aur.archlinux.org/account/yochananmarqos/ [2] https://aur.archlinux.org/pkgbase/musescore-dev/