gnu: Add granite.

* gnu/packages/pantheon.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

gnu/local.mk

@@ -403,6 +403,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/orpheus.scm			\
   %D%/packages/ots.scm				\
   %D%/packages/package-management.scm		\
+  %D%/packages/pantheon.scm			\
   %D%/packages/parallel.scm			\
   %D%/packages/password-utils.scm		\
   %D%/packages/patchutils.scm			\

gnu/packages/pantheon.scm

@@ -0,0 +1,67 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Ryan Prior <rprior@protonmail.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages pantheon)
+  #:use-module (gnu packages gettext)
+  #:use-module (gnu packages glib)
+  #:use-module (gnu packages gnome)
+  #:use-module (gnu packages gtk)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages)
+  #:use-module (guix build-system meson)
+  #:use-module (guix git-download)
+  #:use-module ((guix licenses) :prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix utils))
+
+(define-public granite
+  (package
+    (name "granite")
+    (version "5.4.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/elementary/granite.git")
+                    (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0acicv3f9gksb352v88lwap8ailjsxdrfknl2xql7blasbjzl2q0"))))
+    (build-system meson-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'disable-icon-cache
+           (lambda _
+             (setenv "DESTDIR" "/")
+             #t)))))
+    (inputs
+     `(("gtk" ,gtk+)))
+    (native-inputs
+     `(("gettext" ,gettext-minimal)
+       ("glib" ,glib)
+       ("gobject-introspection" ,gobject-introspection)
+       ("libgee" ,libgee)
+       ("pkg-config" ,pkg-config)
+       ("vala" ,vala)))
+    (home-page "https://github.com/elementary/granite")
+    (synopsis "Library that extends GTK with common widgets and utilities")
+    (description "Granite is a companion library for GTK+ and GLib.  Among other
+things, it provides complex widgets and convenience functions designed for use
+in apps built for the Pantheon desktop.")
+    (license license:lgpl3+)))