gnome2.gnome-icon-theme: move to pkgs/data/icons

pkgs/data/icons/gnome-icon-theme/default.nix

@@ -0,0 +1,33 @@
+{ stdenv, fetchurl, pkgconfig, intltool, iconnamingutils, gtk2 }:
+
+stdenv.mkDerivation rec {
+  pname = "gnome-icon-theme";
+  version = "3.12.0";
+
+  src = fetchurl {
+    url = "mirror://gnome/sources/gnome-icon-theme/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
+    sha256 = "0fjh9qmmgj34zlgxb09231ld7khys562qxbpsjlaplq2j85p57im";
+  };
+
+  nativeBuildInputs = [
+    pkgconfig
+    intltool
+    iconnamingutils
+    gtk2
+  ];
+
+  dontDropIconThemeCache = true;
+
+  postInstall = ''
+    # remove a tree of dirs with no files within
+    rm -r "$out/share/locale"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Collection of icons for the GNOME 2 desktop";
+    homepage = "https://download.gnome.org/sources/gnome-icon-theme/";
+    license = licenses.gpl3Plus;
+    platforms = platforms.unix;
+    maintainers = [ maintainers.romildo ];
+  };
+}