nixos/sway: add programs.sway.extraOptions

nixos/modules/programs/sway.nix

@@ -28,6 +28,7 @@ let
 
   swayPackage = pkgs.sway.override {
     extraSessionCommands = cfg.extraSessionCommands;
+    extraOptions = cfg.extraOptions;
     withBaseWrapper = cfg.wrapperFeatures.base;
     withGtkWrapper = cfg.wrapperFeatures.gtk;
   };
@@ -67,6 +68,21 @@ in {
       '';
     };
 
+    extraOptions = mkOption {
+      type = types.listOf types.str;
+      default = [];
+      example = [
+        "--verbose"
+        "--debug"
+        "--unsupported-gpu"
+        "--my-next-gpu-wont-be-nvidia"
+      ];
+      description = ''
+        Command line arguments passed to launch Sway. Please DO NOT report
+        issues if you use an unsupported GPU (proprietary drivers).
+      '';
+    };
+
     extraPackages = mkOption {
       type = with types; listOf package;
       default = with pkgs; [

pkgs/applications/window-managers/sway/wrapper.nix

@@ -3,6 +3,7 @@
 , makeWrapper, symlinkJoin, writeShellScriptBin
 , withBaseWrapper ? true, extraSessionCommands ? "", dbus
 , withGtkWrapper ? false, wrapGAppsHook, gdk-pixbuf
+, extraOptions ? [] # E.g.: [ "--verbose" ]
 }:
 
 assert extraSessionCommands != "" -> withBaseWrapper;
@@ -39,9 +40,9 @@ in symlinkJoin {
     export dontWrapGApps=true
     ${optionalString withGtkWrapper "wrapGAppsHook"}
     wrapProgram $out/bin/sway \
-      --prefix PATH : "${swaybg}/bin" ${optionalString withGtkWrapper ''\
-        "''${gappsWrapperArgs[@]}"
-      ''}
+      --prefix PATH : "${swaybg}/bin" \
+      ${optionalString withGtkWrapper ''"''${gappsWrapperArgs[@]}"''} \
+      ${optionalString (extraOptions != []) "${concatMapStrings (x: " --add-flags " + x) extraOptions}"}
   '';
 
   passthru.providedSessions = [ "sway" ];