29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
88 lines
2.1 KiB
Nix
88 lines
2.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with pkgs;
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with lib;
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let
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cfg = config.services.opensmtpd;
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conf = writeText "smtpd.conf" cfg.serverConfiguration;
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args = concatStringsSep " " cfg.extraServerArgs;
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in {
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###### interface
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options = {
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services.opensmtpd = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the OpenSMTPD server.";
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};
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extraServerArgs = mkOption {
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type = types.listOf types.string;
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default = [];
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example = [ "-v" "-P mta" ];
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description = ''
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Extra command line arguments provided when the smtpd process
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is started.
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'';
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};
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serverConfiguration = mkOption {
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type = types.string;
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default = "";
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example = ''
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listen on lo
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accept for any deliver to lmtp localhost:24
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'';
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description = ''
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The contents of the smtpd.conf configuration file. See the
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OpenSMTPD documentation for syntax information. If this option
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is left empty, the OpenSMTPD server will not start.
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'';
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};
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};
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};
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###### implementation
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config = mkIf config.services.opensmtpd.enable {
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users.extraGroups = {
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smtpd.gid = config.ids.gids.smtpd;
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smtpq.gid = config.ids.gids.smtpq;
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};
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users.extraUsers = {
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smtpd = {
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description = "OpenSMTPD process user";
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uid = config.ids.uids.smtpd;
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group = "smtpd";
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};
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smtpq = {
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description = "OpenSMTPD queue user";
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uid = config.ids.uids.smtpq;
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group = "smtpq";
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};
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};
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systemd.services.opensmtpd = {
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wantedBy = [ "multi-user.target" ];
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wants = [ "network.target" ];
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after = [ "network.target" ];
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preStart = "mkdir -p /var/spool";
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serviceConfig.ExecStart = "${opensmtpd}/sbin/smtpd -d -f ${conf} ${args}";
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};
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environment.systemPackages = [ (pkgs.runCommand "opensmtpd-sendmail" {} ''
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mkdir -p $out/bin
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ln -s ${opensmtpd}/sbin/smtpctl $out/bin/sendmail
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'') ];
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};
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}
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