nixpkgs/nixos/modules/services/mail/spamassassin.nix

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{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.services.spamassassin;
in
{
###### interface
options = {
services.spamassassin = {
enable = mkOption {
default = false;
description = "Whether to run the SpamAssassin daemon.";
};
debug = mkOption {
default = false;
description = "Whether to run the SpamAssassin daemon in debug mode.";
};
};
};
###### implementation
config = mkIf cfg.enable {
# Allow users to run 'spamc'.
environment.systemPackages = [ pkgs.spamassassin ];
users.extraUsers = singleton {
name = "spamd";
description = "Spam Assassin Daemon";
uid = config.ids.uids.spamd;
group = "spamd";
};
users.extraGroups = singleton {
name = "spamd";
gid = config.ids.gids.spamd;
};
jobs.spamd = {
description = "Spam Assassin Server";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
exec = "${pkgs.spamassassin}/bin/spamd ${optionalString cfg.debug "-D"} --username=spamd --groupname=spamd --nouser-config --virtual-config-dir=/var/lib/spamassassin/user-%u --allow-tell --pidfile=/var/run/spamd.pid";
};
};
}