modules/private/mail/default.nix

   1 { lib, pkgs, config, myconfig,  ... }:
   2 {
   3   config.security.acme.certs."mail" = config.services.myCertificates.certConfig // {
   4     domain = "eldiron.immae.eu";
   5     extraDomains = let
   6       zonesWithMx = builtins.filter (zone:
   7         lib.attrsets.hasAttr "withEmail" zone && lib.lists.length zone.withEmail > 0
   8       ) myconfig.env.dns.masterZones;
   9       mxs = map (zone: "mx-1.${zone.name}") zonesWithMx;
  10     in builtins.listToAttrs (map (mx: lib.attrsets.nameValuePair mx null) mxs);
  11   };
  12 }