anchor.diff:  
     go-humanize = buildFromGitHub {
       version = 2;
  -    rev = "904a49491cd5fb5cba832fac98e7e87d56b690a4";
  +    rev = "7a41df006ff9af79a29f0ffa9c5f21fbe6314a2d";
       owner = "dustin";
       repo = "go-humanize";
  -    sha256 = "084xyw21b52wmqhn4v467ldlhb0a5fq6brb90rw9fpvjf1n278zy";
  -    date = "2017-01-06";
  +    sha256 = "00vxpy53iibp05wyqy6ax54raisq9bzh841narml455hyaglanc1";
  +    date = "2017-01-09";
     };
   
     go-i18n = buildFromGitHub {
  
positive.code:     version = 2;
      owner = "fatih";
      repo = "pool";
      date = "2016-07-21";
      rev = "20a0a429c5f93de45c90f5f09ea297c25e0929b3";
      sha256 = "2dad7d86c3724e9f90e373ead150d0f1f6b02bbfb98a2347e801db5ea1c67d07";
      goPackagePath = "gopkg.in/fatih/pool.v2";
    };
  
  
negative.code: 
    reflectwalk = buildFromGitHub {
      version = 2;
      date = "2017-01-10";
      rev = "417edcfd99a4d472c262e58f22b4bfe97580f03e";
      owner  = "mitchellh";
      repo   = "reflectwalk";
      sha256 = "0kcig5x8bv7hzzyy67g0wsm8akbl6kn8l6r0sdy1yc7jybsnbizq";
    };
  
    roaring = buildFromGitHub {
  