meson does not support parallel building of certain vala projects:
https://github.com/mesonbuild/meson/issues/1994https://bugzilla.gnome.org/show_bug.cgi?id=784236
but at the moment this only affects gnome3.totem:
ninja src/plugins/rotation/rotation.vapi
[1/1] Compiling Vala source ../src/plugins/rotation/bacon-video.vapi ../src/plugins/rotation/totem-rotation-plugin.vala.
FAILED: src/plugins/rotation/rotation@sha/totem-rotation-plugin.c src/plugins/rotation/rotation.h src/plugins/rotation/rotation.vapi
valac -C --pkg clutter-gtk-1.0 --pkg cogl-pango-1.0 --pkg libpeas-1.0 --pkg gtk+-3.0 --color=always --directory src/plugins/rotation/rotation@sha --basedir ../src/plugins/rotation --library rotation --header src/plugins/rotation/rotation.h --vapi ../rotation.vapi --girdir=/tmp/nds-build-gnome3.totem/totem-3.26.0/build/src --pkg=Totem-1.0 ../src/plugins/rotation/bacon-video.vapi ../src/plugins/rotation/totem-rotation-plugin.vala
error: Package `Totem-1.0' not found in specified Vala API directories or GObject-Introspection GIR directories
There are security fixes in multiple packages /cc #32117,
so I'm merging a little earlier, with a few thousand jobs
still not finished on Hydra for x86_64-darwin and aarch64-linux.
We intend to make all GTK apps depend on the desktop schemas. Since
the schemas depend on gnome-backgrounds to determine the default
wallpaper path, it would increase the closure size significantly
for smaller apps.
We could split out the org.gnome.desktop.background and screensaver
schemas but that would make the packaging unnecessarily complicated.
Instead we remove the backgrounds dependency since they are not used
(outside of GNOME) or they will be replaced by a different set by
the NixOS module. There will be no background when running GNOME
manually but that can be easily fixed.