9ab35786f6
We support third party themes, via the "stylesheetName" property of a mode's json files. However, our external CSS API is not completely stable. If a third party theme wants to work on multiple gnome-shell versions - for example because it is shipped as a Flatpak or a Snap - it is not possible to ensure that a theme corresponding to the running gnome-shell version is loaded. GTK+ loads themes from versioned directories, search backwards from the current version. Let's do the same in gnome-shell too. Then a downstream theme can be shipped in $datadir/gnome-shell/3.28/theme/. We keep searching all of the current paths. Additionally, the default case where we look for the 'gnome' theme as a resource in the binary continues to be the default so there are no additional lookups for users of this theme.
GNOME Shell
GNOME Shell provides core user interface functions for the GNOME 3 desktop, like switching to windows and launching applications. GNOME Shell takes advantage of the capabilities of modern graphics hardware and introduces innovative user interface concepts to provide a visually attractive and easy to use experience.
For more information about GNOME Shell, including instructions on how to build GNOME Shell from source and how to get involved with the project, see the [project wiki][wiki]
Bugs should be reported to the GNOME bug tracking system.
License
GNOME Shell is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for details.