anchor.diff:      version = 6;
       owner = "mailru";
       repo = "easyjson";
  -    rev = "8b799c424f57fa123fc63a99d6383bc6e4c02578";
  -    date = "2018-03-23";
  -    sha256 = "1al6gscpjfvynxachblja850lb2lml4fq4wc0b8x6gdixd48k5lp";
  +    rev = "3fdea8d05856a0c8df22ed4bc71b3219245e4485";
  +    date = "2018-06-06";
  +    sha256 = "1fasd9q1d4516jas7fv8awf0bsnayvsdfw8y35wrjnqrkndylac0";
       excludedPackages = "benchmark";
     };
   
  
positive.code:     version = 6;
      owner = "libp2p";
      repo = "go-libp2p";
      date = "2018-04-16";
      rev = "3b8f2275a2b24de5777aaa4fc77f1af57c5c4387";
      sha256 = "0xddd6v0czkbh9bglyzdwl4bys06bsh3f5z8rji1hkxgdlvjkwka";
      excludedPackages = "mock";
      propagatedBuildInputs = [
        goprocess
  
negative.code: 
    go-stream-muxer = buildFromGitHub {
      version = 6;
      rev = "v3.0.1";
      owner  = "libp2p";
      repo   = "go-stream-muxer";
      sha256 = "1j74wxm1ac9634wzqf809hi04a2l4s306452bbviyxblm9wmhshi";
    };
  
    go-syslog = buildFromGitHub {
  