ldgallery: fix darwin build

This adds a missing build dependency for building on Darwin.

GitHub: fixes #122681

pkgs/tools/graphics/ldgallery/default.nix

@@ -1,10 +1,10 @@
-{ lib, pkgs, makeWrapper, haskellPackages, haskell, pandoc, imagemagick }:
+{ lib, pkgs, makeWrapper, haskellPackages, haskell, pandoc, imagemagick, CoreServices }:
 
 with lib;
 with haskell.lib;
 
 let
-  ldgallery-viewer = pkgs.callPackage ./viewer { };
+  ldgallery-viewer = pkgs.callPackage ./viewer { inherit CoreServices; };
   inherit (haskellPackages) ldgallery-compiler;
 
 in

pkgs/tools/graphics/ldgallery/viewer/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkgs, nodejs-12_x, pandoc }:
+{ lib, stdenv, fetchFromGitHub, pkgs, nodejs-12_x, pandoc, CoreServices }:
 
 with lib;
 
@@ -24,6 +24,7 @@ let
   nodePkg = nodePackages.package.override {
     src = "${sourcePkg}/viewer";
     postInstall = "npm run build";
+    buildInputs = optionals stdenv.isDarwin [ CoreServices ];
   };
 
 in

pkgs/top-level/all-packages.nix

@@ -6032,7 +6032,9 @@ in
 
   ldc = callPackage ../development/compilers/ldc { };
 
-  ldgallery = callPackage ../tools/graphics/ldgallery { };
+  ldgallery = callPackage ../tools/graphics/ldgallery {
+    inherit (darwin.apple_sdk.frameworks) CoreServices;
+  };
 
   lbreakout2 = callPackage ../games/lbreakout2 { };