lgogdownloader: disable GUI by default and enable build on darwin (#396299)

pkgs/by-name/lg/lgogdownloader/package.nix

@@ -16,7 +16,7 @@
   libsForQt5,
   testers,
 
-  enableGui ? true,
+  enableGui ? false,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -63,7 +63,9 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "lgogdownloader";
     homepage = "https://github.com/Sude-/lgogdownloader";
     license = lib.licenses.wtfpl;
+    # qtbase requires a sandbox profile with read access to /usr/share/icu.
+    # To prevent build failures in CI, we disable Darwin support when the GUI is enabled.
+    platforms = lib.platforms.linux ++ lib.optionals (!enableGui) lib.platforms.darwin;
     maintainers = with lib.maintainers; [ _0x4A6F ];
-    platforms = lib.platforms.linux;
   };
 })

pkgs/top-level/all-packages.nix

@@ -2259,6 +2259,8 @@ with pkgs;
 
   lexicon = with python3Packages; toPythonApplication dns-lexicon;
 
+  lgogdownloader-gui = callPackage ../by-name/lg/lgogdownloader/package.nix { enableGui = true; };
+
   # Less secure variant of lowdown for use inside Nix builds.
   lowdown-unsandboxed = lowdown.override {
     enableDarwinSandbox = false;