flatpak: add read-only filesystem permissions
Due to portal bugs, this breaks reloading documents. Hopefully we won't need them forever, but for now we do. See https://github.com/flatpak/xdg-desktop-portal/issues/567
Fixes #145 (closed)
Due to portal bugs, this breaks reloading documents. Hopefully we won't need them forever, but for now we do. See https://github.com/flatpak/xdg-desktop-portal/issues/567
Fixes #145 (closed)