robertfoster [1] filed a deletion request for archive-mounter [2]: it was an upstream decision in gvfs 1.61.1/1.62.0, not a packaging bug. The backend is now opt-in and deprecated, and Arch builds with the default. archive-mounter is effectively dead, and the package should be orphaned or deleted
[1] https://aur.archlinux.org/account/robertfoster/ [2] https://aur.archlinux.org/pkgbase/archive-mounter/
