* ipv6calc: 2.1.1 -> 2.2.0
Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/ipv6calc/versions
* ipv6calc: add https source url
+ use postPatch hook instead of overriding patchPhase
* ipv6calc: replace legacy geoip with maxminddb
+ define install dirs using configure flags