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117 lines
3.5 KiB
117 lines
3.5 KiB
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.klipper;
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format = pkgs.formats.ini {
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# https://github.com/NixOS/nixpkgs/pull/121613#issuecomment-885241996
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listToValue = l:
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if builtins.length l == 1 then generators.mkValueStringDefault {} (head l)
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else lib.concatMapStrings (s: "\n ${generators.mkValueStringDefault {} s}") l;
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mkKeyValue = generators.mkKeyValueDefault {} ":";
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};
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in
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{
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##### interface
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options = {
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services.klipper = {
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enable = mkEnableOption "Klipper, the 3D printer firmware";
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package = mkOption {
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type = types.package;
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default = pkgs.klipper;
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defaultText = literalExpression "pkgs.klipper";
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description = "The Klipper package.";
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};
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inputTTY = mkOption {
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type = types.path;
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default = "/run/klipper/tty";
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description = "Path of the virtual printer symlink to create.";
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};
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apiSocket = mkOption {
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type = types.nullOr types.path;
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default = "/run/klipper/api";
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description = "Path of the API socket to create.";
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};
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octoprintIntegration = mkOption {
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type = types.bool;
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default = false;
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description = "Allows Octoprint to control Klipper.";
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};
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user = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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User account under which Klipper runs.
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If null is specified (default), a temporary user will be created by systemd.
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'';
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};
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group = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Group account under which Klipper runs.
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If null is specified (default), a temporary user will be created by systemd.
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'';
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};
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settings = mkOption {
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type = format.type;
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default = { };
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description = ''
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Configuration for Klipper. See the <link xlink:href="https://www.klipper3d.org/Overview.html#configuration-and-tuning-guides">documentation</link>
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for supported values.
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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 cfg.enable {
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assertions = [
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{
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assertion = cfg.octoprintIntegration -> config.services.octoprint.enable;
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message = "Option klipper.octoprintIntegration requires Octoprint to be enabled on this system. Please enable services.octoprint to use it.";
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}
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{
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assertion = cfg.user != null -> cfg.group != null;
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message = "Option klipper.group is not set when a user is specified.";
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}
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];
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environment.etc."klipper.cfg".source = format.generate "klipper.cfg" cfg.settings;
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services.klipper = mkIf cfg.octoprintIntegration {
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user = config.services.octoprint.user;
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group = config.services.octoprint.group;
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};
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systemd.services.klipper = let
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klippyArgs = "--input-tty=${cfg.inputTTY}"
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+ optionalString (cfg.apiSocket != null) " --api-server=${cfg.apiSocket}";
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in {
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description = "Klipper 3D Printer Firmware";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig = {
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ExecStart = "${cfg.package}/lib/klipper/klippy.py ${klippyArgs} /etc/klipper.cfg";
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RuntimeDirectory = "klipper";
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SupplementaryGroups = [ "dialout" ];
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WorkingDirectory = "${cfg.package}/lib";
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} // (if cfg.user != null then {
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Group = cfg.group;
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User = cfg.user;
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} else {
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DynamicUser = true;
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User = "klipper";
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});
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};
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};
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}
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