Not sure if this belongs under Platform or Applications, but I think this is more likely to be the right place for this.
I’m using GNOME Builder on GNOME 44 on Fedora Workstation 38. I created a new Vala project, which made a basic template, then waited for the sdks to download before attempting to build the project. Sadly, however, my build attempt was faced with failure:
flatpak build-init --type=app --arch=x86_64 /home/user/.cache/gnome-builder/projects/ValaTest/flatpak/staging/x86_64-main org.firebook.valatest org.gnome.Sdk org.gnome.Platform master --sdk-extension=org.freedesktop.Sdk.Extension.vala error: Requested extension org.freedesktop.Sdk.Extension.vala/x86_64/master not installed
That led me to do some hunting, and I ended up here: Vala moves from the base org.gnome.Sdk to a separate Sdk Extension From the looks of it, I have org.freedesktop.Sdk.Extension.vala/x86_64/23.08 installed, and that should work (I also have org.gnome.Sdk/x86_64/master and org.gnome.Platform/x86_64/master installed according to Builder’s “Manage SDKs” info).
Any clue what I’m doing wrong? Is this possibly a bug in the SDKs or in GNOME Builder?