anchor.diff:  
     procfs = buildFromGitHub {
       version = 5;
  -    rev = "85fadb6e89903ef7cca6f6a804474cd5ea85b6e1";
  -    date = "2018-01-23";
  +    rev = "cb4147076ac75738c9a7d279075a253c0cc5acbd";
  +    date = "2018-01-25";
       owner  = "prometheus";
       repo   = "procfs";
  -    sha256 = "1nyi4klsy4nxclxw2ij1f9inl2cahwmdgl0qk9aipvbs2mbi32kx";
  +    sha256 = "126fvs00g1asj3lyhyb292w246dpicl3a2dsbg9cc1gbb7vkvhvz";
     };
   
     profile = buildFromGitHub {
  
positive.code:       mux
        net
      ];
    };
  
    go-envparse = buildFromGitHub {
  
negative.code:     version = 5;
      owner = "moby";
      repo = "moby";
      rev = "090c5bf25a53c8656cddfed275874030a6109ec0";
      date = "2018-02-05";
      sha256 = "14b70yp342a6bncymg766blqyw5max5rk8d0vlzsm7b4800hq3hm";
      goPackageAliases = [
        "github.com/docker/docker"
      ];
  