Gtkmm 4.0 not avail on some linux distributions and cygwin

hi
i noticed that some distributions still dont have gtkmm4.0 library in their distro. Im not big fan to do app image to hold gtkmm4.0 and all dependencies. can i please ask if someone can check availibility of library? also it would realy help if cygwin would support gtkmm 4.0 because it would enable to port my app to windows.

GNOME projects are very rarely responsible for their downstream packaging. You need to ask the distributions.

thank you for reply … so then i would have to pack gtkmm4 to appimage. can i ask what is estimate appimage file size with gtkmm4 packed inside?

I don’t know about appimage, but I have a very simple gtkmm4 application in a flatpak that is about 33.4MB–that’s basically the app plus the gtkmm4 library. As for GTK itself in org.gnome.Platform/x86_64, that’s counted separately for flatpaks.