anchor.diff:  
     postInstall = ''
       installManPage sonic.1
  +  '' + stdenv.lib.optionalString stdenv.isDarwin ''
  +    install_name_tool -id $out/lib/libsonic.so.0.3.0 $out/lib/libsonic.so.0.3.0
     '';
   
     meta = with stdenv.lib; {
  
positive.code:     sha256 = "1z9qdk3pk507hdg39v2z1hanlw2wv7mhn8br4cb8qry9z9qwi87i";
    };
  
    postPatch = ''
      sed -i "s,^PREFIX=.*,PREFIX=$out," Makefile
    '';
  
    nativeBuildInputs = [ installShellFiles ];
  
  
negative.code:     homepage = "https://github.com/waywardgeek/sonic";
      license = licenses.asl20;
      maintainers = with maintainers; [ aske ];
      platforms = platforms.all;
    };
  }
  