Fix JDK build

jdk.nix

@@ -1,18 +1,14 @@
 {
-  buildPlatform,
-  hostPlatform,
+  stdenv,
   jdk21,
   which,
   zip,
   buildPackages,
 }:
-if buildPlatform == hostPlatform
+if stdenv.buildPlatform == stdenv.hostPlatform
 then jdk21
 else
-  (jdk21.override {
-    # libIDL does not compile in cross-compile scenarios.
-    enableGnome2 = false;
-  }).overrideAttrs (old: {
+  jdk21.overrideAttrs (old: {
     # lol, nixpkgs can’t get pkgs right
     # AUTOCONF = "${autoconf}/bin/autoconf";
     nativeBuildInputs = old.nativeBuildInputs ++ [which zip];
@@ -21,7 +17,6 @@ else
       old.configureFlags
       ++ [
         "--with-jtreg=no"
-        "--disable-hotspot-gtest"
         "--with-build-jdk=${buildPackages.jdk21}"
       ];
   })