gnu: gnome-xyz: Add gnome-shell-extension-vertical-overview.

* gnu/packages/gnome-xyz.scm (gnome-shell-extension-vertical-overview): New Variable.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>

gnu/packages/gnome-xyz.scm

@@ -15,6 +15,7 @@
 ;;; Copyright © 2021 Songlin Jiang <hollowman@hollowman.ml>
 ;;; Copyright © 2021 Justin Veilleux <terramorpha@cock.li>
 ;;; Copyright © 2021 Attila Lendvai <attila@lendvai.name>
+;;; Copyright © 2021 Charles Jackson <charles.b.jackson@protonmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -742,6 +743,45 @@ store an history of everything you do, so that you can get back to older
 copies you now want to paste.")
     (license license:bsd-2)))
 
+(define-public gnome-shell-extension-vertical-overview
+  (package
+    (name "gnome-shell-extension-vertical-overview")
+    (version "8")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/RensAlthuis/vertical-overview")
+             (commit (string-append "v" version))))
+       (sha256
+        (base32
+         "01vz48p3bh7p3ybdyw0s0ahs18lk2kzk9x4ad46s0dnwmmsyhww9"))
+       (file-name (git-file-name name version))
+       (snippet
+        '(begin (delete-file "schemas/gschemas.compiled")))))
+    (build-system copy-build-system)
+    (arguments
+     `(#:install-plan
+       '(("." ,(string-append
+                "share/gnome-shell/extensions/"
+                "vertical-overview@RensAlthuis.github.com")
+          #:include-regexp ("\\.js(on)?$" "\\.css$" "\\.ui$" "\\.png$"
+                            "\\.xml$" "\\.compiled$")))
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'install 'compile-schemas
+           (lambda _
+             (with-directory-excursion "schemas"
+               (invoke "glib-compile-schemas" ".")))))))
+    (native-inputs
+     (list `(,glib "bin")))  ; for glib-compile-resources
+    (home-page "https://github.com/RensAlthuis/vertical-overview")
+    (synopsis "Provides a vertical overview in Gnome 40 and upper")
+    (description "This Gnome extension replaces the new horizontally oriented
+Gnome overview with something that resembles the old vertically oriented
+style.")
+    (license license:gpl3)))
+
 (define-public arc-theme
   (package
     (name "arc-theme")