{ stdenv, fetchurl }:

let
  fetchDB = src: name: sha256: fetchurl {
    inherit name sha256;
    url = "https://geolite.maxmind.com/download/geoip/database/${src}";
  };

  # Annoyingly, these files are updated without a change in URL. This means that
  # builds will start failing every month or so, until the hashes are updated.
  version = "2015-09-08";
in
stdenv.mkDerivation {
  name = "geolite-legacy-${version}";

  srcGeoIP = fetchDB
    "GeoLiteCountry/GeoIP.dat.gz" "GeoIP.dat.gz"
    "11xv6ws0gzyj9bf1j1g67cklkkl6s4wb6z6n7kxjcxnn2274nfy0";
  srcGeoIPv6 = fetchDB
    "GeoIPv6.dat.gz" "GeoIPv6.dat.gz"
    "1q5vgk522wq5ybhbw86zk8njgg611kc46a22vkrp08vklbni3akz";
  srcGeoLiteCity = fetchDB
    "GeoLiteCity.dat.xz" "GeoIPCity.dat.xz"
    "07hx9g6kif75icsblcdk64rq13w2knpns4lrxdbf63mmqbqxj29g";
  srcGeoLiteCityv6 = fetchDB
    "GeoLiteCityv6-beta/GeoLiteCityv6.dat.gz" "GeoIPCityv6.dat.gz"
    "0f3y1cpjfd4q55a2kvhzsklmmp6k19v9vsdsjxr4sapc8f5fgfc9";
  srcGeoIPASNum = fetchDB
    "asnum/GeoIPASNum.dat.gz" "GeoIPASNum.dat.gz"
    "0jmvq6pllxj802yq1ygf487yk8qb30v7izrl82pyvqnjljkhkm5m";
  srcGeoIPASNumv6 = fetchDB
    "asnum/GeoIPASNumv6.dat.gz" "GeoIPASNumv6.dat.gz"
    "0hcw69mfgqfhlrf4mwfb6qa1m107k2xrxjgr3fssk3l18x0bw2br";

  meta = with stdenv.lib; {
    inherit version;
    description = "GeoLite Legacy IP geolocation databases";
    homepage = https://geolite.maxmind.com/download/geoip;
    license = licenses.cc-by-sa-30;
    platforms = platforms.all;
    maintainers = with maintainers; [ nckx ];
  };

  builder = ./builder.sh;
}