Monado (vr) updates

hosts/default/home.nix

@@ -70,7 +70,31 @@
   home.sessionVariables = {
     # EDITOR = "emacs";
   };
+  # For Monado:
+  xdg.configFile."openxr/1/active_runtime.json".source = "${pkgs.monado}/share/openxr/1/openxr_monado.json";
 
+  # For WiVRn:
+  #xdg.configFile."openxr/1/active_runtime.json".source = "${pkgs.wivrn}/share/openxr/1/openxr_wivrn.json";
+
+  xdg.configFile."openvr/openvrpaths.vrpath".text = ''
+    {
+      "config" :
+      [
+        "${config.xdg.dataHome}/Steam/config"
+      ],
+      "external_drivers" : null,
+      "jsonid" : "vrpathreg",
+      "log" :
+      [
+        "${config.xdg.dataHome}/Steam/logs"
+      ],
+      "runtime" :
+      [
+        "${pkgs.opencomposite}/lib/opencomposite"
+      ],
+      "version" : 1
+    }
+  '';
   # Let Home Manager install and manage itself.
   programs.home-manager.enable = true;
 }