I am well out of practice with flatpak these days, however If you have just done a flatpak update then you probably have a mixture of old and new packages. Both gimp_gmic_qt and resythesizer flatpak packages are there for Gimp 3.0.4
(1) Do a flatpak list and see if there are packages you need to uninstall. A new Mint 22.1 install looks like this
(2) Gmic and Resynthesizer look like this
flatpak install flathub org.gimp.GIMP.Plugin.GMic
and
flatpak install flathub org.gimp.GIMP.Plugin.Resynthesizer
(3) Proof
(1) Do a flatpak list and see if there are packages you need to uninstall. A new Mint 22.1 install looks like this
Code:
flatpak install --user https://flathub.org/repo/appstream/org.gimp.GIMP.flatpakref
(2) Gmic and Resynthesizer look like this
flatpak install flathub org.gimp.GIMP.Plugin.GMic
and
flatpak install flathub org.gimp.GIMP.Plugin.Resynthesizer
(3) Proof