supercollider: re-enable QtWebEngine and fix -FFTW3F-INCLUDE-DIR build error (#531489)

pkgs/development/interpreters/supercollider/default.nix

@@ -16,6 +16,7 @@
   libxt,
   readline,
   useSCEL ? false,
+  useQtWebEngine ? true,
   emacs,
   gitUpdater,
   supercollider-with-plugins,
@@ -65,6 +66,7 @@ stdenv.mkDerivation rec {
     qt6.qtbase
     qt6.qtwebsockets
     qt6.qtwayland
+    qt6.qtwebengine
     readline
   ]
   ++ lib.optional (!stdenv.hostPlatform.isDarwin) alsa-lib;
@@ -74,7 +76,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DSC_WII=OFF"
     "-DSC_EL=${if useSCEL then "ON" else "OFF"}"
-    (lib.cmakeBool "SC_USE_QTWEBENGINE" false)
+    (lib.cmakeBool "SC_USE_QTWEBENGINE" useQtWebEngine)
   ];
 
   passthru = {

pkgs/development/interpreters/supercollider/plugins/sc3-plugins.nix

@@ -6,6 +6,7 @@
   cmake,
   supercollider,
   fftw,
+  fftwFloat,
   gitUpdater,
 }:
 
@@ -25,6 +26,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     supercollider
     fftw
+    fftwFloat # builds without this will return an error message about no FFTW3F-INCLUDE-DIR
   ];
 
   cmakeFlags = [
@@ -46,7 +48,9 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Community plugins for SuperCollider";
     homepage = "https://supercollider.github.io/sc3-plugins/";
-    maintainers = [ ];
+    maintainers = with lib.maintainers; [
+      pretentiousUsername
+    ];
     license = lib.licenses.gpl2Plus;
     platforms = lib.platforms.linux;
   };