Provide a 32-bit compatibility extension for flatpak runtime
Similary to org.freedesktop.Platform.Compat.i386
.
We are currently working on Lutris flatpak, which depends on Gnome Sdk and requires multiarch support simultaneously. Currently, we have to either use FD.o 32-bit extension, or build parts of Gnome Sdk ourselves, both ways introduces problems. Providing a org.gnome.Platform.Compat.i386
extension would solve this and help us very much.