anchor.diff:    };
   
     websocket = buildFromGitHub {
  -    version = 1;
  -    rev = "v1.0.0";
  +    version = 2;
  +    rev = "0b847f2facc24ec406130a05bb1bb72d41993b05";
       owner  = "gorilla";
       repo   = "websocket";
  -    sha256 = "11sggyd6plhcd4bdi8as0bx70bipda8li1rdf0y2n5iwnar3qflq";
  +    sha256 = "11bf9hgfcbmpl9pj4x7g1274kq8alvqx0jyxxygai300f6as90s5";
  +    date = "2016-10-21";
     };
   
     wmi = buildFromGitHub {
  
positive.code: 
    azure-sdk-for-go = buildFromGitHub {
      version = 2;
      date = "2016-10-04";
      rev = "91f3d4a4d024e3c0d4d9412916d05cf84504a616";
      owner  = "Azure";
      repo   = "azure-sdk-for-go";
      sha256 = "0n4yzckkqqlfx1pj4ymwd5xa79im3dwf3mhvl5wk6blglyxhgyvy";
      buildInputs = [
        go-autorest
        satori_uuid
  
negative.code: 
    crypto = buildFromGitHub {
      version = 2;
      rev = "3c0d69f1777220f1a1d2ec373cb94a282f03eb42";
      date = "2016-10-21";
      owner    = "golang";
      repo     = "crypto";
      sha256 = "1a6mpgwyc5sh7mbcx1g31ba1m3qmyr3ligs5gww2x0bn476ymr24";
      goPackagePath = "golang.org/x/crypto";
      goPackageAliases = [
        "code.google.com/p/go.crypto"
  