Flatpak (flatpak-build) fatal error when building submodules
问题 Following on from here, when using OpenSUSE Tumbleweed I cannot get flatpak-builder to compile submodule dependencies. I first noticed this issue when developing a console application within Gnome Builder using the Vala dependencies Gee and GXml. As a test, I have installed org.gnome.Books.json and issued the following command (as documented here): $ flatpak-builder --repo=repo books-app org.gnome.Books.json The outcome is the same as I observed when developing my own application, the fatal