anchor.diff: -{ stdenv
  +{ stdenv, gcc
   , jshon
   , glib
   , nspr
  
positive.code: 
      patchPhase = ''
        chmod +x libpepflashplayer.so
        patchelf --set-rpath "${mkrpath [ stdenv.cc.cc ]}" libpepflashplayer.so
      '';
  
      doCheck = true;
  
negative.code:       ! find -iname '*.so' -exec ldd {} + | grep 'not found'
      '';
  
      PATCH_RPATH = mkrpath [ gcc.cc glib nspr nss ];
  
      patchPhase = ''
        chmod +x libwidevinecdm.so libwidevinecdmadapter.so
  