anchor.diff:  { stdenv
   , fetchurl
  +, lib
   
   , xz
   }:
  
positive.code:     xz
    ];
  
    postPatch =
      /* Completely disable examples */ ''
        sed -i Makefile.{am,in} \
          -e '/SUBDIRS/ s:examples::'
      '';
  
    configureFlags = [
      "--disable-maintainer-mode"
  
negative.code: 
    src = fetchurl rec {
      url = "https://gstreamer.freedesktop.org/src/orc/${name}.tar.xz";
      hashOutput = false;
      sha256 = "7d52fa80ef84988359c3434e1eea302d077a08987abdde6905678ebcad4fa649";
    };
  
  