nixos/modules/services/mail/dovecot.nix

   1 { pkgs, lib, config, ... }:
   2 let
   3   inherit (pkgs.lib) unlinesValues;
   4   inherit (config.services) dovecot2;
   5   stateDir = "/var/lib/dovecot";
   6 in
   7 {
   8   config = lib.mkIf dovecot2.enable {
   9     systemd.services.dovecot2 = {
  10       preStart = unlinesValues {
  11         installDomains = ''
  12           # SEE: http://wiki2.dovecot.org/SharedMailboxes/Permissions
  13           install -D -d -m 0771 \
  14            -o "${dovecot2.user}" \
  15            -g "${dovecot2.group}" \
  16            ${stateDir}/mail
  17         '';
  18       };
  19     };
  20   };
  21 }