I'm trying to install flatpak and I've never used an overlay before. From all that I've searched, I think I'm 'almost there' and it seems the only thing stopping the emerge is Calculating dependencies | !!! 'acct-group/flatpak' has a category that is not listed in /etc/portage/categories           ... done! I don't have a file or a directory in /etc/portage called categories aragon ~ # emerge -avl dev-util/flatpak-builder sys-apps/flatpak These are the packages that would b