From d18ac2bca18eb0b3f77511f74f192453c7184b67 Mon Sep 17 00:00:00 2001
From: Elyhaka <57923898+Elyhaka@users.noreply.github.com>
Date: Sun, 5 Jan 2020 14:43:39 +0100
Subject: gdm: refactor to properly handle wayland sessions

---
 pkgs/desktops/gnome-3/core/gnome-session/default.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'pkgs/desktops/gnome-3/core')

diff --git a/pkgs/desktops/gnome-3/core/gnome-session/default.nix b/pkgs/desktops/gnome-3/core/gnome-session/default.nix
index 459512017c5..3df78b88090 100644
--- a/pkgs/desktops/gnome-3/core/gnome-session/default.nix
+++ b/pkgs/desktops/gnome-3/core/gnome-session/default.nix
@@ -6,6 +6,8 @@ stdenv.mkDerivation rec {
   pname = "gnome-session";
   version = "3.34.2";
 
+  outputs = ["out" "sessions"];
+
   src = fetchurl {
     url = "mirror://gnome/sources/gnome-session/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "1qgqp97f8k2zi2ydvhds14zsjzfj7cv521r6wx5sw0qacn0p7dwb";
@@ -50,6 +52,15 @@ stdenv.mkDerivation rec {
       --suffix XDG_CONFIG_DIRS : "${gnome3.gnome-settings-daemon}/etc/xdg"
   '';
 
+  # We move the GNOME sessions to another output since gnome-session is a dependency of
+  # GDM itself. If we do not hide them, it will show broken GNOME sessions when GDM is
+  # enabled without proper GNOME installation.
+  postInstall = ''
+    mkdir $sessions
+    moveToOutput share/wayland-sessions "$sessions"
+    moveToOutput share/xsessions "$sessions"
+  '';
+
   passthru = {
     updateScript = gnome3.updateScript {
       packageName = "gnome-session";
-- 
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