anchor.diff: -/**
  - * Initial stdenv should have:
  - * - shell
  - * - mkdir
  - * - gnu tar
  - * - curl
  - */
   {system} :
   
   let {
  
positive.code: 
    /**
     * Initial standard environment based on native Cygwin tools.
     */
    stdenvInit1 =
      import ./simple-stdenv {
  
negative.code:      inherit fetchurl;
      };
  }
  