2e751c0772
the conversion procedure is simple: - find all things that look like options, ie calls to either `mkOption` or `lib.mkOption` that take an attrset. remember the attrset as the option - for all options, find a `description` attribute who's value is not a call to `mdDoc` or `lib.mdDoc` - textually convert the entire value of the attribute to MD with a few simple regexes (the set from mdize-module.sh) - if the change produced a change in the manual output, discard - if the change kept the manual unchanged, add some text to the description to make sure we've actually found an option. if the manual changes this time, keep the converted description this procedure converts 80% of nixos options to markdown. around 2000 options remain to be inspected, but most of those fail the "does not change the manual output check": currently the MD conversion process does not faithfully convert docbook tags like <code> and <package>, so any option using such tags will not be converted at all.
73 lines
2 KiB
Nix
73 lines
2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.epmd;
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in
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{
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###### interface
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options.services.epmd = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc ''
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Whether to enable socket activation for Erlang Port Mapper Daemon (epmd),
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which acts as a name server on all hosts involved in distributed
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Erlang computations.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.erlang;
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defaultText = literalExpression "pkgs.erlang";
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description = lib.mdDoc ''
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The Erlang package to use to get epmd binary. That way you can re-use
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an Erlang runtime that is already installed for other purposes.
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'';
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};
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listenStream = mkOption
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{
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type = types.str;
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default = "[::]:4369";
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description = lib.mdDoc ''
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the listenStream used by the systemd socket.
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see https://www.freedesktop.org/software/systemd/man/systemd.socket.html#ListenStream= for more informations.
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use this to change the port epmd will run on.
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if not defined, epmd will use "[::]:4369"
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'';
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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assertions = [{
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assertion = cfg.listenStream == "[::]:4369" -> config.networking.enableIPv6;
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message = "epmd listens by default on ipv6, enable ipv6 or change config.services.epmd.listenStream";
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}];
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systemd.sockets.epmd = rec {
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description = "Erlang Port Mapper Daemon Activation Socket";
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wantedBy = [ "sockets.target" ];
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before = wantedBy;
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socketConfig = {
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ListenStream = cfg.listenStream;
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Accept = "false";
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};
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};
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systemd.services.epmd = {
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description = "Erlang Port Mapper Daemon";
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after = [ "network.target" ];
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requires = [ "epmd.socket" ];
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serviceConfig = {
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DynamicUser = true;
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ExecStart = "${cfg.package}/bin/epmd -systemd";
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Type = "notify";
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};
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};
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};
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meta.maintainers = teams.beam.members;
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}
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