universedesktop: DWL & Nvidia Fix

machines/universedesktop/desktop/dwl.nix

@@ -1,4 +1,14 @@
-{ config, pkgs, lib, ... }: {
+{ config, pkgs, lib, ... }: let 
+  dwl-startup = pkgs.writeScript "dwl-startup.sh" ''
+    #!${pkgs.bash}/bin/bash
+    ${pkgs.yambar}/bin/yambar
+  '';
+
+  launch_emacs = pkgs.writeScript "emacsclient-or-start" ''
+    #!${pkgs.bash}/bin/bash
+    emacsclient --create-frame --alternate-editor=""
+  '';
+in {
   imports = [
     ./wayland.nix
   ];
@@ -7,11 +17,32 @@
     (final: prev: {
       dwl = prev.dwl.overrideAttrs (old: {
         postPatch = ''
-          termcmd=${pkgs.foot}/bin/foot
-          menucmd=${pkgs.bemenu}/bin/bemenu
+          export termcmd=${pkgs.foot}/bin/foot
+          export editcmd=${launch_emacs}
+          export menucmd=${pkgs.fuzzel}/bin/fuzzel
           substituteAll ${./dwl/config.def.h} ./config.def.h
         '';
+        postInstall = ''
+          sed -i "s#Exec=dwl#Exec=dwl -s ${dwl-startup}#" $out/share/wayland-sessions/dwl.desktop
+          chmod ugo+x $out/share/wayland-sessions/dwl.desktop
+	'';
+        passthru.providedSessions = ["dwl"];
       });
     })
   ];
+
+  environment.sessionVariables = {
+    NIXOS_OZONE_WL=1;
+    WLR_NO_HARDWARE_CURSORS=1;
+    SDL_VIDEODRIVER="wayland";
+    QT_QPA_PLATFORM="wayland-egl";
+    QT_WAYLAND_DISABLE_WINDOW_DECORATIONS="1";
+    __JAVA_AWT_WM_NONREPARENTING=1;
+  };
+
+  environment.systemPackages = with pkgs; [
+    dwl
+    yambar
+    foot
+  ];
 }