From 4f943ef23720157d80084aff9646c25f4bf05a0f Mon Sep 17 00:00:00 2001
From: "William A. Kennington III" <william@wkennington.com>
Date: Thu, 21 May 2015 19:06:03 -0700
Subject: [PATCH] nixos/lightdm: More changes

---
 .../services/x11/display-managers/lightdm.nix | 27 ++++++++++++++-----
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/nixos/modules/services/x11/display-managers/lightdm.nix b/nixos/modules/services/x11/display-managers/lightdm.nix
index dedd0e63b5f..f6de8c02b18 100644
--- a/nixos/modules/services/x11/display-managers/lightdm.nix
+++ b/nixos/modules/services/x11/display-managers/lightdm.nix
@@ -124,11 +124,6 @@ in
 
   config = mkIf cfg.enable {
 
-    assertions = [ {
-      assertion = !config.services.accounts-daemon.enable;
-      message = "Lightdm does not properly support gnome accountservice";
-    } ];
-
     services.xserver.displayManager.slim.enable = false;
 
     services.xserver.displayManager.job = {
@@ -148,8 +143,26 @@ in
     services.dbus.enable = true;
     services.dbus.packages = [ lightdm ];
 
-    security.pam.services.lightdm = { allowNullPassword = true; startSession = true; };
-    security.pam.services.lightdm-greeter = { allowNullPassword = true; startSession = true; };
+    security.pam.services.lightdm = {
+      allowNullPassword = true;
+      startSession = true;
+    };
+    security.pam.services.lightdm-greeter = {
+      allowNullPassword = true;
+      startSession = true;
+      text = ''
+        auth     required pam_env.so
+        auth     required pam_permit.so
+
+        account  required pam_permit.so
+
+        password required pam_deny.so
+
+        session  required pam_env.so envfile=${config.system.build.pamEnvironment}
+        session  required pam_unix.so
+        session  optional ${pkgs.systemd}/lib/security/pam_systemd.so
+      '';
+    };
 
     users.extraUsers.lightdm = {
       createHome = true;