Was vala compiler removed from quay.io/gnome_infrastructure/gnome-runtime-images:gnome-master recently?
Check out https://gitlab.gnome.org/mcrha/evolution-data-server/-/jobs/2915189 , it fails with:
CMake Error at CMakeLists.txt:441 (message):
valac, the Vala compiler was not found. Install it or disable Vala
bindings with -DICAL_GLIB_VAPI=False.
the same build script worked ~19 hours before that one:
https://gitlab.gnome.org/mcrha/evolution-data-server/-/jobs/2913480
thus I guess something changed with the runtime images. No idea whether it was intentional, but I hope it was not, because the vala compiler seems to be essential for the GNOME "these days".