nixos/tests/qtile: test extraPackages and qtile-extras

nixos/tests/all-tests.nix

@@ -827,7 +827,7 @@ in {
   qgis = handleTest ./qgis.nix { qgisPackage = pkgs.qgis; };
   qgis-ltr = handleTest ./qgis.nix { qgisPackage = pkgs.qgis-ltr; };
   qownnotes = handleTest ./qownnotes.nix {};
-  qtile = handleTestOn ["x86_64-linux" "aarch64-linux"] ./qtile.nix {};
+  qtile = handleTestOn ["x86_64-linux" "aarch64-linux"] ./qtile/default.nix {};
   quake3 = handleTest ./quake3.nix {};
   quicktun = handleTest ./quicktun.nix {};
   quickwit = handleTest ./quickwit.nix {};

nixos/tests/qtile/add-widget.patch

@@ -0,0 +1,19 @@
+--- a/config.py	2024-05-31 14:49:23.852287845 +0200
++++ b/config.py	2024-05-31 14:51:00.935182266 +0200
+@@ -29,6 +29,8 @@
+ from libqtile.lazy import lazy
+ from libqtile.utils import guess_terminal
+ 
++from qtile_extras import widget
++
+ mod = "mod4"
+ terminal = guess_terminal()
+ 
+@@ -162,6 +164,7 @@
+                 # NB Systray is incompatible with Wayland, consider using StatusNotifier instead
+                 # widget.StatusNotifier(),
+                 widget.Systray(),
++                widget.AnalogueClock(),
+                 widget.Clock(format="%Y-%m-%d %a %I:%M %p"),
+                 widget.QuickExit(),
+             ],

nixos/tests/qtile/config.nix

@@ -0,0 +1,24 @@
+{ stdenvNoCC, fetchurl }:
+stdenvNoCC.mkDerivation {
+  name = "qtile-config";
+  version = "0.0.1";
+
+  src = fetchurl {
+    url = "https://raw.githubusercontent.com/qtile/qtile/v0.28.1/libqtile/resources/default_config.py";
+    hash = "sha256-Y5W277CWVNSi4BdgEW/f7Px/MMjnN9W9TDqdOncVwPc=";
+  };
+
+  prePatch = ''
+    cp $src config.py
+  '';
+
+  patches = [ ./add-widget.patch ];
+
+  dontUnpack = true;
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out
+    cp config.py $out/config.py
+  '';
+}

nixos/tests/qtile/default.nix

@@ -1,15 +1,26 @@
-import ./make-test-python.nix ({ lib, ...} : {
+import ../make-test-python.nix ({ lib, ...} : {
   name = "qtile";
 
   meta = {
     maintainers = with lib.maintainers; [ sigmanificient ];
   };
 
-  nodes.machine = { pkgs, lib, ... }: {
-    imports = [ ./common/x11.nix ./common/user-account.nix ];
+  nodes.machine = { pkgs, lib, ... }: let
+    # We create a custom Qtile configuration file that adds a widget from
+    # qtile-extras to the bar. This ensure that the qtile-extras package
+    # also works, and that extraPackages behave as expected.
+
+    config-deriv = pkgs.callPackage ./config.nix { };
+  in {
+    imports = [ ../common/x11.nix ../common/user-account.nix ];
     test-support.displayManager.auto.user = "alice";
 
-    services.xserver.windowManager.qtile.enable = true;
+    services.xserver.windowManager.qtile = {
+      enable = true;
+      configFile = "${config-deriv}/config.py";
+      extraPackages = ps: [ ps.qtile-extras ];
+    };
+
     services.displayManager.defaultSession = lib.mkForce "qtile";
 
     environment.systemPackages = [ pkgs.kitty ];