anchor.diff:  
     go-multihash = buildFromGitHub {
       version = 2;
  -    rev = "54d61d0ef96ad9ff7e6b8825e52a255714c3c86a";
  +    rev = "31c3a74c91e5b82e7786023c84acc4d0a80affc9";
       owner  = "multiformats";
       repo   = "go-multihash";
  -    sha256 = "03knv6a4hw6mrd9lvx391i2a5fzp28brhric6gdvdpr8x17lpddw";
  +    sha256 = "0ycssxa2kn6qszdqy2aghsi98pv0iifvsmgj61qjbk8dxbfrymx5";
       goPackageAliases = [ "github.com/jbenet/go-multihash" ];
       propagatedBuildInputs = [
         crypto
  
positive.code:       crypto
        dns
        dnspod-go
        weppos-dnsimple-go
        egoscale
        go-autorest
        go-ini
  
negative.code:     version = 2;
      owner = "ncw";
      repo = "rclone";
      rev = "216499d78b75146252c5440e7c3e9a1319654d05";
      sha256 = "01hgjip9x9dcl27pywf62866fvsvmhms75v5ryci4siwyhy6kq11";
      propagatedBuildInputs = [
        aws-sdk-go
        cobra
  