nixpkgs/modules/services/networking/oidentd.nix

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{ config, pkgs, ... }:
with pkgs.lib;
{
###### interface
options = {
services.oidentd.enable = mkOption {
default = false;
type = types.bool;
description = ''
Whether to enable oidentd, an implementation of the Ident
protocol (RFC 1413). It allows remote systems to identify the
name of the user associated with a TCP connection.
'';
};
};
###### implementation
config = mkIf config.services.oidentd.enable {
jobs.oidentd =
{ startOn = "started network-interfaces";
daemonType = "fork";
exec = "${pkgs.oidentd}/sbin/oidentd -u oidentd -g nogroup";
};
users.extraUsers = singleton
{ name = "oidentd";
description = "Ident Protocol daemon user";
};
};
}