anchor.diff:        ln -s . $out/share/zoneinfo/posix
         mv $out/share/zoneinfo-leaps $out/share/zoneinfo/right
   
  -      mkdir -p "$lib/include"
  -      cp tzfile.h "$lib/include/tzfile.h"
  +      mkdir -p "$out/include"
  +      cp tzfile.h "$out/include/tzfile.h"
       '';
   
     meta = {
  
positive.code:     platforms = stdenv.lib.platforms.all;
    };
  }
  
negative.code: { stdenv, fetchurl }:
  
  let version = "2015c";
  
  self = stdenv.mkDerivation rec {
    name = "tzdata-${version}";
  
    srcs =
  