system: fix monitor order

home/home.nix

@@ -114,10 +114,6 @@ in
     };
   };
 
-  xsession.initExtra = ''
-    xrandr --output HDMI-A-0 --rotate right --left-of DisplayPort-1
-  '';
-
   xdg = {
     enable = true;
     configFile = {

system/machine/home/default.nix

@@ -35,16 +35,21 @@ in
   };
 
   services.xserver = {
+    # All monitors in the right order
+    # See: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/services/x11/xserver.nix#L83
     xrandrHeads = [
-      {
-        output = "DisplayPort-1";
-        primary = true;
-      }
       {
         output = "HDMI-A-0";
         monitorConfig = ''
+          Option "PreferredMode" "1920x1080"
           Option "Rotate" "right"
-          Option "LeftOf" "DisplayPort-1"
+        '';
+      }
+      {
+        output = "DisplayPort-1";
+        primary = true;
+        monitorConfig = ''
+          Option "PreferredMode" "2560x1440"
         '';
       }
     ];