gnome3.mutter: enable profiler

This needed a patch to get the correct directory to the sysprof
dbus interface.

pkgs/desktops/gnome-3/core/mutter/0001-build-use-get_pkgconfig_variable-for-sysprof-dbusdir.patch

@@ -0,0 +1,25 @@
+From 71acfd5258b4d12323fc51dda48e83830e62e696 Mon Sep 17 00:00:00 2001
+From: worldofpeace <worldofpeace@protonmail.ch>
+Date: Mon, 16 Sep 2019 11:18:27 -0400
+Subject: [PATCH] build: use get_pkgconfig_variable for sysprof dbusdir
+
+---
+ src/meson.build | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/meson.build b/src/meson.build
+index 182f7f5f5..43060865b 100644
+--- a/src/meson.build
++++ b/src/meson.build
+@@ -710,7 +710,7 @@ if have_profiler
+     'backends/meta-profiler.h',
+   ]
+ 
+-  dbus_interfaces_dir = join_paths(datadir, 'dbus-1', 'interfaces')
++  dbus_interfaces_dir = join_paths(sysprof_dep.get_pkgconfig_variable('prefix'), 'share', 'dbus-1', 'interfaces')
+   sysprof3_dbus_file = join_paths(dbus_interfaces_dir, 'org.gnome.Sysprof3.Profiler.xml')
+ 
+   dbus_sysprof3_profiler_built_sources = gnome.gdbus_codegen('meta-dbus-sysprof3-profiler',
+-- 
+2.22.1
+

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

@@ -25,7 +25,6 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dxwayland-path=${xwayland}/bin/Xwayland"
     "-Dinstalled_tests=false" # TODO: enable these
-    "-Dprofiler=false"
   ];
 
   propagatedBuildInputs = [
@@ -51,7 +50,7 @@ stdenv.mkDerivation rec {
     geocode-glib libinput libgudev libwacom
     libcanberra-gtk3 zenity xkeyboard_config libxkbfile
     libxkbcommon pipewire xwayland
-    gnome-settings-daemon # sysprof
+    gnome-settings-daemon sysprof
   ];
 
   patches = [
@@ -60,6 +59,8 @@ stdenv.mkDerivation rec {
       url = "https://gitlab.gnome.org/GNOME/mutter/commit/850ef518795dcc20d3b9a4f661f70ff8d0ddacb2.patch";
       sha256 = "0cxdbrbcc8kfkvw7ryxjm2v1vk15jki7bawn128385r5hasabhxf";
     })
+   # TODO: submit upstream
+   ./0001-build-use-get_pkgconfig_variable-for-sysprof-dbusdir.patch
     (substituteAll {
       src = ./fix-paths.patch;
       inherit zenity;