LogNotes

# flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
# flatpak install openarena

Note that the directories 

'/var/lib/flatpak/exports/share'
'/root/.local/share/flatpak/exports/share'

are not in the search path set by the XDG_DATA_DIRS environment variable, so
applications installed by Flatpak may not appear on your desktop until the
session is restarted.

Looking for matches…
Similar refs found for ‘openarena’ in remote ‘flathub’ (system):

   1) app/ws.openarena.OpenArena/x86_64/stable
   2) app/io.github.ec_.Quake3e.OpenArena/x86_64/stable

Which do you want to use (0 to abort)? [0-2]: 2
Required runtime for io.github.ec_.Quake3e.OpenArena/x86_64/stable (runtime/org.freedesktop.Platform/x86_64/24.08) found in remote flathub
Do you want to install it? [Y/n]: 

io.github.ec_.Quake3e.OpenArena permissions:
    ipc      network     fallback-x11     pulseaudio     wayland     x11     devices



        ID                                            Branch               Op          Remote           Download
 1. [✓] org.freedesktop.Platform.GL.default           24.08                i           flathub          155.3 MB / 155.7 MB
 2. [✓] org.freedesktop.Platform.GL.default           24.08extra           i           flathub           23.9 MB / 155.7 MB
 3. [✓] org.freedesktop.Platform.Locale               24.08                i           flathub           18.6 kB / 381.1 MB
 4. [✓] org.freedesktop.Platform.openh264             2.5.1                i           flathub            1.3 MB / 971.4 kB
 5. [✓] org.freedesktop.Platform                      24.08                i           flathub          296.3 MB / 263.2 MB
 6. [✓] io.github.ec_.Quake3e.OpenArena               stable               i           flathub          441.8 MB / 433.5 MB

Installation complete.