oech3 [1] filed a request to merge mingw-w64-glibmm-2.68 [2] into mingw-w64-glibmm [3]:
pkgname has 2.68 while pkgver=2.84 [1] https://aur.archlinux.org/account/oech3/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-glibmm-2.68/ [3] https://aur.archlinux.org/pkgbase/mingw-w64-glibmm/
