anchor.diff:    };
   
     runtime-spec = buildFromGitHub {
  -    rev = "v0.5.0";
  +    rev = "bf58a8f54497acc1f414a5e752057a6694feccf3";
  +    date = "2016-05-04";
       owner  = "opencontainers";
       repo   = "runtime-spec";
  -    sha256 = "1jv82zyvhdg5pqbdm0265i6rsc4mzwxll8cjzggfhwagypn467w5";
  +    sha256 = "458cbe83d33e754f18da879f6313a05c68a58856bb2a36056a81d119d967f2c0";
       buildInputs = [
         gojsonschema
       ];
  
positive.code:   };
  
    muxado = buildFromGitHub {
      date = "2016-04-12";
      rev = "abadcf80c5cad697d16042f459ec1dca9acef317";
      owner  = "inconshreveable";
      repo   = "muxado";
      sha256 = "1ziszvgs3b6kzpbf1wkbnr16skfldrs6m5kpfcfx85hdhsdi3dbs";
    };
  
    mysql = buildFromGitHub {
  
negative.code:   };
  
    hil = buildFromGitHub {
      date = "2016-04-08";
      rev = "6215360e5247e7c4bdc317a5f95e3fa5f084a33b";
      owner  = "hashicorp";
      repo   = "hil";
      sha256 = "6b3ab530f6980279edb5a1994226adefc377b70aa3e993b5d29c7d498d5cdbd4";
      propagatedBuildInputs = [
        mapstructure
        reflectwalk
  