This a pre-configured flatpak manifest to build an emacs branch with libjanson, libgccjit and dependencies. This uses the latest releases of of all components, except for gcc, which has jit fixes in-tree and emacs, which has the experimental code bringing everything together.
This simply glues everything together to in a trackable package rather than installing to /usr/local/
If you’d prefer traditional ./configure && make && make install all functionality is in the master branch on savannah.
Based off the official documentation: https://docs.flatpak.org/en/latest/first-build.html
flatpak install org.gnome.Sdk(might also want to install the relevant theme you prefer)flatpak-builder --force-clean --user --install build-dir org.gnu.emacs.json- this will take some time
Rebuilding is simply repeating step 2