diff --git a/nixos/tests/maestral.nix b/nixos/tests/maestral.nix
index ba2e0b2f3baa..67a265926187 100644
--- a/nixos/tests/maestral.nix
+++ b/nixos/tests/maestral.nix
@@ -52,7 +52,7 @@ import ./make-test-python.nix ({ pkgs, ... }: {
 
   testScript = { nodes, ... }:
     let
-      user = nodes.cli.config.users.users.alice;
+      user = nodes.cli.users.users.alice;
     in
     ''
       start_all()
@@ -65,7 +65,8 @@ import ./make-test-python.nix ({ pkgs, ... }: {
 
       with subtest("GUI"):
         gui.wait_for_x()
-        gui.succeed("xauth merge ${user.home}/.Xauthority")
+        gui.wait_for_file("/tmp/xauth_*")
+        gui.succeed("xauth merge /tmp/xauth_*")
         gui.wait_for_window("^Desktop ")
         gui.wait_for_unit("maestral.service", "${user.name}")
     '';
diff --git a/nixos/tests/plasma-bigscreen.nix b/nixos/tests/plasma-bigscreen.nix
index 1c61cafcbff3..2fe90fa9b539 100644
--- a/nixos/tests/plasma-bigscreen.nix
+++ b/nixos/tests/plasma-bigscreen.nix
@@ -22,14 +22,11 @@ import ./make-test-python.nix ({ pkgs, ...} :
     users.users.alice.extraGroups = ["uinput"];
   };
 
-  testScript = { nodes, ... }: let
-    user = nodes.machine.users.users.alice;
-    xdo = "${pkgs.xdotool}/bin/xdotool";
-  in ''
+  testScript = { nodes, ... }: ''
     with subtest("Wait for login"):
         start_all()
-        machine.wait_for_file("${user.home}/.Xauthority")
-        machine.succeed("xauth merge ${user.home}/.Xauthority")
+        machine.wait_for_file("/tmp/xauth_*")
+        machine.succeed("xauth merge /tmp/xauth_*")
 
     with subtest("Check plasmashell started"):
         machine.wait_until_succeeds("pgrep plasmashell")
diff --git a/nixos/tests/plasma5-systemd-start.nix b/nixos/tests/plasma5-systemd-start.nix
index f584c1ec137a..31a313af308b 100644
--- a/nixos/tests/plasma5-systemd-start.nix
+++ b/nixos/tests/plasma5-systemd-start.nix
@@ -23,13 +23,11 @@ import ./make-test-python.nix ({ pkgs, ...} :
     };
   };
 
-  testScript = { nodes, ... }: let
-    user = nodes.machine.config.users.users.alice;
-  in ''
+  testScript = { nodes, ... }: ''
     with subtest("Wait for login"):
         start_all()
-        machine.wait_for_file("${user.home}/.Xauthority")
-        machine.succeed("xauth merge ${user.home}/.Xauthority")
+        machine.wait_for_file("/tmp/xauth_*")
+        machine.succeed("xauth merge /tmp/xauth_*")
 
     with subtest("Check plasmashell started"):
         machine.wait_until_succeeds("pgrep plasmashell")
diff --git a/nixos/tests/plasma5.nix b/nixos/tests/plasma5.nix
index b3836cf641d4..fb8a5b73832e 100644
--- a/nixos/tests/plasma5.nix
+++ b/nixos/tests/plasma5.nix
@@ -13,10 +13,8 @@ import ./make-test-python.nix ({ pkgs, ...} :
     services.xserver.enable = true;
     services.xserver.displayManager.sddm.enable = true;
     services.xserver.displayManager.defaultSession = "plasma";
-    services.xserver.desktopManager.plasma5 = {
-      enable = true;
-      excludePackages = [ pkgs.plasma5Packages.elisa ];
-    };
+    services.xserver.desktopManager.plasma5.enable = true;
+    environment.plasma5.excludePackages = [ pkgs.plasma5Packages.elisa ];
     services.xserver.displayManager.autoLogin = {
       enable = true;
       user = "alice";
@@ -25,13 +23,13 @@ import ./make-test-python.nix ({ pkgs, ...} :
   };
 
   testScript = { nodes, ... }: let
-    user = nodes.machine.config.users.users.alice;
+    user = nodes.machine.users.users.alice;
     xdo = "${pkgs.xdotool}/bin/xdotool";
   in ''
     with subtest("Wait for login"):
         start_all()
-        machine.wait_for_file("${user.home}/.Xauthority")
-        machine.succeed("xauth merge ${user.home}/.Xauthority")
+        machine.wait_for_file("/tmp/xauth_*")
+        machine.succeed("xauth merge /tmp/xauth_*")
 
     with subtest("Check plasmashell started"):
         machine.wait_until_succeeds("pgrep plasmashell")
@@ -46,6 +44,8 @@ import ./make-test-python.nix ({ pkgs, ...} :
     with subtest("Ensure Elisa is not installed"):
         machine.fail("which elisa")
 
+    machine.succeed("su - ${user.name} -c 'xauth merge /tmp/xauth_*'")
+
     with subtest("Run Dolphin"):
         machine.execute("su - ${user.name} -c 'DISPLAY=:0.0 dolphin >&2 &'")
         machine.wait_for_window(" Dolphin")
diff --git a/nixos/tests/retroarch.nix b/nixos/tests/retroarch.nix
index f4bf232ea725..0e5f60aa8be2 100644
--- a/nixos/tests/retroarch.nix
+++ b/nixos/tests/retroarch.nix
@@ -30,8 +30,8 @@ import ./make-test-python.nix ({ pkgs, ... }:
       in ''
         with subtest("Wait for login"):
             start_all()
-            machine.wait_for_file("${user.home}/.Xauthority")
-            machine.succeed("xauth merge ${user.home}/.Xauthority")
+            machine.wait_for_file("/tmp/xauth_*")
+            machine.succeed("xauth merge /tmp/xauth_*")
 
         with subtest("Check RetroArch started"):
             machine.wait_until_succeeds("pgrep retroarch")