gnome3.gnome-<several>: Use a gvc suitable for modern laptops

Address:
https://mail.gnome.org/archives/distributor-list/2020-September/msg00001.html

gnome3.gnome-{control-center,settings-daemon,shell} ship within their
tarball a copy of lignome-volume-control in the `subprojects/gvc/`. This
commit makes them use an updated version of it, which supports Modern
laptops with SOF for audio. Close #98470.

pkgs/desktops/gnome-3/core/gnome-control-center/default.nix

@@ -1,4 +1,5 @@
 { fetchurl
+, fetchFromGitLab
 , stdenv
 , substituteAll
 , accountsservice
@@ -74,6 +75,10 @@ stdenv.mkDerivation rec {
     url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "1nmi5mf7bffjyb7sd6kcv151j0mfmlqpzy2spaaxhf4wxywbbdpn";
   };
+  # See https://mail.gnome.org/archives/distributor-list/2020-September/msg00001.html
+  prePatch = (import ../gvc-with-ucm-prePatch.nix {
+    inherit fetchFromGitLab;
+  });
 
   nativeBuildInputs = [
     docbook_xsl

pkgs/desktops/gnome-3/core/gnome-settings-daemon/default.nix

@@ -1,4 +1,5 @@
 { stdenv
+, fetchFromGitLab
 , substituteAll
 , fetchurl
 , meson
@@ -47,6 +48,11 @@ stdenv.mkDerivation rec {
     sha256 = "0bkrsqzyrxvnw2x1p2a67k3f692ih3i5pafnxqn1kbcsmdgmpvdp";
   };
 
+  # See https://mail.gnome.org/archives/distributor-list/2020-September/msg00001.html
+  prePatch = (import ../gvc-with-ucm-prePatch.nix {
+    inherit fetchFromGitLab;
+  });
+
   patches = [
     (substituteAll {
       src = ./fix-paths.patch;

pkgs/desktops/gnome-3/core/gnome-shell/default.nix

@@ -1,4 +1,5 @@
 { fetchurl
+, fetchFromGitLab
 , fetchpatch
 , substituteAll
 , stdenv
@@ -77,6 +78,11 @@ stdenv.mkDerivation rec {
     sha256 = "15qabakial0jcsqkq1xg4fsssarixq6aqqksikdfcpl7q0xl09n6";
   };
 
+  # See https://mail.gnome.org/archives/distributor-list/2020-September/msg00001.html
+  prePatch = (import ../gvc-with-ucm-prePatch.nix {
+    inherit fetchFromGitLab;
+  });
+
   patches = [
     # Hardcode paths to various dependencies so that they can be found at runtime.
     (substituteAll {

pkgs/desktops/gnome-3/core/gvc-with-ucm-prePatch.nix

@@ -0,0 +1,17 @@
+{ fetchFromGitLab }:
+
+let
+  # We need a gvc different then that which is shipped in the source tarball of
+  # whatever package that imports this file
+  gvc-src-with-ucm = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "GNOME";
+    repo = "libgnome-volume-control";
+    rev = "7a621180b46421e356b33972e3446775a504139c";
+    sha256 = "07rkgh9f7qcmlpy6jqh944axzh3z38f47g48ii842f2i3a1mrbw9";
+  };
+in
+''
+  rm -r ./subprojects/gvc
+  cp -r ${gvc-src-with-ucm} ./subprojects/gvc
+''