anchor.diff:      jansson
       libcap-ng
       libedit
  -    libidn
  +    libidn2
       liburcu
       lmdb
       nettle
  
positive.code:     "--enable-systemd"
      "--with-urcu=${liburcu}"
      "--with-lmdb=${lmdb}"
      "--with-libidn=${libidn}"
      "--enable-dnstap"
    ];
  
  
negative.code: , jansson
  , libcap-ng
  , libedit
  , libidn2
  , liburcu
  , lmdb
  , nettle
  