1d4bddaed5
started copying override files from packages into the schema for compilation.
`gsettings-desktop-schemas` package contains `remove-backgrounds.gschema.override`
which is later in the alphabet than `nixos-defaults.gschema.override`
so it would take precedence over the values from the GNOME NixOS module,
causing the background to not be set, among other things.
Let’s rename the override file coming from the module to be applied last.
This will clean up the module slightly and bring it more in line with Pantheon & Cinnamon.
While at it do some other refactoring inspired by those modules:
- Correct a typo in light background attribute name.
- Rename the attribute name.
- Quote arguments.
- Extract the overridden package list and override text into variables.
- Avoid having separate copy commands for overrides from packages.
- Avoid `with` statements.
- Use `concatMapStringsSep`.
