GSettings now recognizes per-desktop overrides that can be used
to change schemas' default values for classic mode, so use that
instead of the separate override schema we currently use with
mutter's custom override mechanism.
https://bugzilla.gnome.org/show_bug.cgi?id=786496
Meson has a strict separation of source- and build directory, and
expects anything generated in the latter. That means that in order
to maintain our current setup - shipping the generated CSS in the
repo while also optionally updating it automatically when sassc is
found - we have to fight the build system to some extent, which makes
it less reliable than we would like.
Since we switched to sassc which is a more acceptable build-time
dependency than the original ruby-based tool, just drop the CSS
from the repo and unconditionally generate it from SASS if classic
mode is enabled.
https://gitlab.gnome.org/GNOME/gnome-shell-extensions/merge_requests/28
Florian Müllner