Flatpack is one of the official ways to install the RC:

If you have Flatpack on your system, go to https://www.gimp.org/downloads/devel/ and click the GNU/Linux option, there will be a button to install it.

If the button doesn’t work, the page says:

Flatpak additional instructions

If the link above doesn’t open your software installer, install with following command:

flatpak install --user https://flathub.org/beta-repo/appstream/org.gimp.GIMP.flatpakref

Run with following command line:

flatpak run org.gimp.GIMP//beta

To update:

flatpak update

Note: If you installed both the stable and beta repositories, the desktop (menus, etc.) will see only one version at a time. To make sure your desktop sees the development version, run this command:

flatpak make-current --user org.gimp.GIMP beta

Or respectively to restore the stable version as the visible GIMP application:

flatpak make-current --user org.gimp.GIMP stable

You may also create shortcuts running specifically one of the other version.

I can’t join [email protected] either. I can search and find [email protected] however. I had trouble getting to [email protected] for over six hours today, and then it just worked.

Lemmyngs