user services + wm in hjr, some qs workaround

graphical/desktop/wm.nix

@@ -0,0 +1,74 @@
+{
+  mainUser,
+  inputs,
+  getFlakePkg',
+  lib,
+  config,
+  ...
+}:
+let
+  niri = (getFlakePkg' inputs.niri "niri-unstable");
+  xwayland-satellite = (getFlakePkg' inputs.niri "xwayland-satellite-unstable");
+  inherit (config) rice;
+in
+{
+  imports = [
+    inputs.niri.nixosModules.niri
+    inputs.niri-tag.nixosModules.niri-tag
+  ];
+  user.desktops.niri = {
+    enable = true;
+    config =
+      let
+        template = builtins.readFile ./niri.kdl;
+        baseConfig =
+          with rice;
+          lib.replaceStrings
+            [
+              "%CURSOR%"
+              "%ROUNDING%"
+              "%GAPS%"
+              "%BORDER%"
+              "%ACTIVE%"
+              "%INACTIVE%"
+              "%SATELLITE%"
+            ]
+            [
+              cursor.name
+              (toString borders.rounding)
+              (toString borders.gaps)
+              (toString borders.thickness)
+              palette.shortHex.bright.yellow
+              palette.shortHex.normal.yellow
+              (lib.getExe xwayland-satellite)
+            ]
+            template;
+      in
+      baseConfig;
+  };
+  user.packages = [
+    niri
+    xwayland-satellite
+  ];
+  services.greetd = {
+    enable = true;
+    restart = false;
+    settings =
+      let
+        session = {
+          command = "niri-session";
+          user = "${mainUser}";
+        };
+      in
+      {
+        default_session = session;
+        initial_session = session;
+      };
+  };
+  programs.niri = {
+    enable = true;
+    package = niri;
+  };
+  services.niri-tag.enable = true;
+
+}