{
  domains = builtins.filter (x: x != "" && x != [ ] && x != null) (
    builtins.split "\n" (builtins.readFile ./airelle/ads.domains.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/ads.hosts.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/malware.domains.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/malware.hosts.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/miscellaneous.domains.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/miscellaneous.hosts.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/phishing.domains.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/phishing.hosts.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/porn.domains.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/porn.hosts.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/trackers.domains.list)
    ++ builtins.split "\n" (builtins.readFile ./airelle/trackers.hosts.list)
  );
}