As gnome-builder closes itself without any crash message, I found on web the suggestion to uninstall gnome-builder, updating flatpak and than to reinstall builder.
The problem is that when I give the command sudo flatpack update it return this:
sudo flatpak update
Looking for updates…
Info: runtime org.gnome.Platform branch 43 is end-of-life, with reason:
The GNOME 43 runtime is no longer supported as of September 20, 2023. Please ask your application developer to migrate to a supported platform.
Info: applications using this runtime:
com.github.rafostar.Clapper, com.leinardi.gst, fr.handbrake.ghb
Info: runtime org.freedesktop.Platform branch 20.08 is end-of-life, with reason:
org.freedesktop.Platform 20.08 is no longer receiving fixes and security updates. Please update to a supported runtime version.
Info: applications using this runtime:
org.wesnoth.Wesnoth
Info: runtime org.freedesktop.Platform.GL.default branch 20.08 is end-of-life, with reason:
org.freedesktop.Platform 20.08 is no longer receiving fixes and security updates. Please update to a supported runtime version.
Info: applications using this extension:
org.wesnoth.Wesnoth
Nothing to do.
The above message indicates that the "flatpak update" command completed successfully ( meaning nothing to automatically update in your flatpak installation ).
Above info messages are informing you that you’re using old flatpak runtimes ( and old apps which use those old runtimes ). You can ignore the messages and use the old apps / runtime if you want ( not recommended though )
But, If you want to get rid of these messages, you can check to see if there are newer versions of those apps listed which use the newer runtimes, and update them accordingly.
Example:
You can fix the Wesnoth messages by removing app:
org.wesnoth.Wesnoth/x86_64/1.14 ( which depends on old runtime org.freedesktop.Platform/x86_64/20.08 )
and installing
org.wesnoth.Wesnoth/x86_64/stable ( which depends on a newer runtime org.freedesktop.Platform/x86_64/22.08 ).
$ flatpak search org.wesnoth.Wesnoth
Name Application ID Version Branch Remotes
Battle for Wesnoth org.wesnoth.Wesnoth 1.16.10 stable flathub
Battle for Wesnoth org.wesnoth.Wesnoth 1.14.17 1.14 flathub