gnu: Add gnome-shell-extension-sound-output-device-chooser.

* gnu/packages/gnome-xyz.scm
(gnome-shell-extension-sound-output-device-chooser): New variable.

Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

gnu/packages/gnome-xyz.scm

@@ -1018,6 +1018,39 @@ (define-public gnome-shell-extension-radio
 directly inside GNOME Shell.  It can manage stations and play streams.")
     (license license:gpl3+)))
 
+(define-public gnome-shell-extension-sound-output-device-chooser
+  (package
+    (name "gnome-shell-extension-sound-output-device-chooser")
+    (version "43")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/kgshank/gse-sound-output-device-chooser")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1qk6ypyqbv8zwwlky6cgk9hgp1zh32jmzw4wza200g4v94ifkwm9"))))
+    (build-system gnu-build-system)
+    (arguments
+     (list
+      #:tests? #f ; no check target
+      #:make-flags #~(list (string-append "INSTALL_DIR="
+                                          #$output
+                                          "/share/gnome-shell/extensions"))
+      #:phases
+      #~(modify-phases %standard-phases (delete 'configure))))
+    (native-inputs (list gettext-minimal `(,glib "bin")))
+    (inputs (list python))
+    (home-page
+     "https://extensions.gnome.org/extension/906/sound-output-device-chooser")
+    (synopsis "Sound output chooser for GNOME Shell")
+    (description "This extension shows a list of sound output and input devices
+in the status menu below the volume slider.  Various active ports like HDMI,
+Speakers etc. of the same device are also displayed for selection.")
+    (license license:gpl3+)))
+
 (define-public arc-theme
   (package
     (name "arc-theme")