MarsSeed [1] filed a deletion request for mingw-w64-json-glib-bin [2]: Outdated binary for json-glib, it's just a repackage of MSYS2 repo's prebuilt binary pacman package.
AUR has the current version of mingw-w64-json-glib from same maintainer. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-json-glib-bin/
