MarsSeed [1] filed a deletion request for mingw-w64-serd [2]: No longer needed by mingw-w64-gstreamer et al. And its direct consumer, mingw-w64-sord cannot be built due to 2-3 year abandoned dependency chain and missing depends in it. . [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-serd/