anchor.diff:      cups
       gnutls
       iniparser
  -    kerberos
  +    #krb5_full
       ldb
       libarchive
       libbsd
  
positive.code: , glusterfs
  , gnutls
  , iniparser
  , kerberos
  , ldb
  , libaio
  , libarchive
  
negative.code:   src = fetchurl {
      urls = map (n: "${n}.gz") tarballUrls;
      hashOutput = false;
      sha256 = "d3a9a439b746ddd2c5f119f60c72ef8a026bcee1efb1199bf19e44f114f6b586";
    };
  
    nativeBuildInputs = [
  