Nautilus, resp. gnome-desktop, scans `thumbnailers` directories
under the paths in `XDG_DATA_DIRS`. gdk-pixbuf was not, for some
reason, listed in the variable, therefore Nautilus did not generate
image thumbnails.
I also add librsvg to the variable so that SVG files can be rendered.
It does not work at the moment, though, because of incorrect path to
the renderer.
(cherry picked from commit baa7e397c1)
* gnome3: only maintain single GNOME 3 package set
GNOME 3 was split into 3.10 and 3.12 in #2694. Unfortunately, we barely have the resources
to update a single version of GNOME. Maintaining multiple versions just does not make sense.
Additionally, it makes viewing history using most Git tools bothersome.
This commit renames `pkgs/desktops/gnome-3/3.24` to `pkgs/desktops/gnome-3`, removes
the config variable for choosing packageset (`environment.gnome3.packageSet`), updates
the hint in maintainer script, and removes the `gnome3_24` derivation from `all-packages.nix`.
Closes: #29329
* maintainers/scripts/gnome: Use fixed GNOME 3 directory
Since we now allow only a single GNOME 3 package set, specifying
the working directory is not necessary.
This commit sets the directory to `pkgs/desktops/gnome-3`.
(cherry picked from commit 69698ec11c)
