misc changes and add tlauncher

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

modules/graphics.nix

@@ -5,7 +5,7 @@ let
     export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
     export __GLX_VENDOR_LIBRARY_NAME=nvidia
     export __VK_LAYER_NV_optimus=NVIDIA_only
-    exec -a "$0" "$@"
+    exec "$@"
   '';
 in
 {

modules/xorg.nix

@@ -28,8 +28,6 @@
         startx = {
           enable = true; 
         }; 
- #       lightdm.enable = true;
- #      sessionCommands = "${pkgs.xorg.xkbcomp}/bin/xkbcomp ${compiledLayout} $DISPLAY";
       };
       extraLayouts = {
         us-colemak = {