{ config, pkgs, lib, ... }: let cfg = config.services.mailcatcher; inherit (lib) mkEnableOption mkIf mkOption types optionalString; in { # interface options = { services.mailcatcher = { enable = mkEnableOption "MailCatcher, an SMTP server and web interface to locally test outbound emails"; http.ip = mkOption { type = types.str; default = "127.0.0.1"; description = "The ip address of the http server."; }; http.port = mkOption { type = types.port; default = 1080; description = "The port address of the http server."; }; http.path = mkOption { type = with types; nullOr str; default = null; description = "Prefix to all HTTP paths."; example = "/mailcatcher"; }; smtp.ip = mkOption { type = types.str; default = "127.0.0.1"; description = "The ip address of the smtp server."; }; smtp.port = mkOption { type = types.port; default = 1025; description = "The port address of the smtp server."; }; }; }; # implementation config = mkIf cfg.enable { environment.systemPackages = [ pkgs.mailcatcher ]; systemd.services.mailcatcher = { description = "MailCatcher Service"; after = [ "network.target" ]; wantedBy = [ "multi-user.target" ]; serviceConfig = { DynamicUser = true; Restart = "always"; ExecStart = "${pkgs.mailcatcher}/bin/mailcatcher --foreground --no-quit --http-ip ${cfg.http.ip} --http-port ${toString cfg.http.port} --smtp-ip ${cfg.smtp.ip} --smtp-port ${toString cfg.smtp.port}" + optionalString (cfg.http.path != null) " --http-path ${cfg.http.path}"; AmbientCapabilities = optionalString (cfg.http.port < 1024 || cfg.smtp.port < 1024) "cap_net_bind_service"; }; }; }; }