Add privacy module to waybar, fix pcmanfm against a config

modules/system/services/general/default.nix

@@ -2,6 +2,7 @@
 {
   imports = [
     ./gnome-keyring
+    ./greetd
     ./gvfs
     ./keyd
     ./libvirtd

modules/system/services/general/greetd/default.nix

@@ -0,0 +1,39 @@
+{ config, pkgs, ... }:
+{
+  services.greetd = {
+    enable = config.system.desktop.enable;
+    restart = true;
+    settings = {
+      terminal = {
+        vt = 2;
+        switch = true;
+      };
+      default_session.command = "${pkgs.greetd.tuigreet}/bin/tuigreet";
+    };
+  };
+
+  environment.etc."greetd/environments".text = let
+    initScript = ''
+      if ${pkgs.pciutils}/bin/lspci -k | grep "in use: nvidia" &> /dev/null; then
+        export LIBVA_DRIVER_NAME=nvidia
+        export GBM_BACKEND=nvidia-drm
+        export __GLX_VENDOR_LIBRARY_NAME=nvidia
+      else
+        :
+      fi
+    '';
+  in ''
+    ${pkgs.writeScript "startsway" ''
+      ${initScript}
+      export QT_QPA_PLATFORM="wayland;xcb"
+      export XDG_CURRENT_DESKTOP=sway
+      sway --unsupported-gpu
+    ''}
+    ${pkgs.writeScript "startniri" ''
+      ${initScript}
+      export QT_QPA_PLATFORM=wayland
+      export XDG_CURRENT_DESKTOP=niri
+      niri-session
+    ''}
+  '';
+}