{ stdenv, callPackage, fetchpatch # Darwin frameworks , Cocoa, CoreMedia, VideoToolbox , ... }@args: callPackage ./generic.nix (rec { version = "4.2.1"; branch = "4.2"; sha256 = "090naa6rj46pzkgh03bf51hbqdz356qqckr2pw6pykc6ysiryak8"; darwinFrameworks = [ Cocoa CoreMedia VideoToolbox ]; } // args)