Merge pull request #264588 from acowley/osx-dictionary

              --replace '"mozc_emacs_helper"' '"${pkgs.ibus-engines.mozc}/lib/mozc/mozc_emacs_helper"'

          '';

        });

        # Build a helper executable that interacts with the macOS Dictionary.app

        osx-dictionary =

          if pkgs.stdenv.isDarwin

          then super.osx-dictionary.overrideAttrs (old: {

            buildInputs =

              old.buildInputs ++

              (with pkgs.darwin.apple_sdk.frameworks; [CoreServices Foundation]);

            dontUnpack = false;

            buildPhase = (old.buildPhase or "") + ''

              cd source

              $CXX -O3 -framework CoreServices -framework Foundation osx-dictionary.m -o osx-dictionary-cli

            '';

            postInstall = (old.postInstall or "") + "\n" + ''

              outd=$out/share/emacs/site-lisp/elpa/osx-dictionary-*

              mkdir -p $out/bin

              install -m444 -t $out/bin osx-dictionary-cli

              rm $outd/osx-dictionary.m

            '';

          })

          else super.osx-dictionary;

      };

    in lib.mapAttrs (n: v: if lib.hasAttr n overrides then overrides.${n} else v) super);