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Merge pull request #188273 from cab404/klipper-mutable-config

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klipper: additional config options
This commit is contained in:
Alexander Bantyev 2022-09-28 04:12:05 +04:00 committed by GitHub
commit 3814271800
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1 changed files with 68 additions and 10 deletions
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78
nixos/modules/services/misc/klipper.nix
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@ -35,6 +35,30 @@ in
description = lib.mdDoc "Path of the API socket to create.";
};
mutableConfig = mkOption {
type = types.bool;
default = false;
example = true;
description = lib.mdDoc ''
Whether to copy the config to a mutable directory instead of using the one directly from the nix store.
This will only copy the config if the file at `services.klipper.mutableConfigPath` doesn't exist.
'';
};
mutableConfigFolder = mkOption {
type = types.path;
default = "/var/lib/klipper";
description = lib.mdDoc "Path to mutable Klipper config file.";
};
configFile = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Path to default Klipper config.
'';
};
octoprintIntegration = mkOption {
type = types.bool;
default = false;
@ -62,8 +86,8 @@ in
};
settings = mkOption {
type = format.type;
default = { };
type = types.nullOr format.type;
default = null;
description = lib.mdDoc ''
Configuration for Klipper. See the [documentation](https://www.klipper3d.org/Overview.html#configuration-and-tuning-guides)
for supported values.
@ -80,6 +104,10 @@ in
building of firmware and addition of klipper-flash tools for manual flashing.
This will add `klipper-flash-$mcu` scripts to your environment which can be called to flash the firmware.
'');
serial = mkOption {
type = types.nullOr path;
description = lib.mdDoc "Path to serial port this printer is connected to. Leave `null` to derive it from `service.klipper.settings`.";
};
configFile = mkOption {
type = path;
description = lib.mdDoc "Path to firmware config which is generated using `klipper-genconf`";
@ -95,19 +123,25 @@ in
assertions = [
{
assertion = cfg.octoprintIntegration -> config.services.octoprint.enable;
message = "Option klipper.octoprintIntegration requires Octoprint to be enabled on this system. Please enable services.octoprint to use it.";
message = "Option services.klipper.octoprintIntegration requires Octoprint to be enabled on this system. Please enable services.octoprint to use it.";
}
{
assertion = cfg.user != null -> cfg.group != null;
message = "Option klipper.group is not set when a user is specified.";
message = "Option services.klipper.group is not set when services.klipper.user is specified.";
}
{
assertion = foldl (a: b: a && b) true (mapAttrsToList (mcu: _: mcu != null -> (hasAttrByPath [ "${mcu}" "serial" ] cfg.settings)) cfg.firmwares);
message = "Option klipper.settings.$mcu.serial must be set when klipper.firmware.$mcu is specified";
assertion = cfg.settings != null -> foldl (a: b: a && b) true (mapAttrsToList (mcu: _: mcu != null -> (hasAttrByPath [ "${mcu}" "serial" ] cfg.settings)) cfg.firmwares);
message = "Option services.klipper.settings.$mcu.serial must be set when settings.klipper.firmware.$mcu is specified";
}
{
assertion = (cfg.configFile != null) != (cfg.settings != null);
message = "You need to either specify services.klipper.settings or services.klipper.defaultConfig.";
}
];
environment.etc."klipper.cfg".source = format.generate "klipper.cfg" cfg.settings;
environment.etc = mkIf (!cfg.mutableConfig) {
"klipper.cfg".source = if cfg.settings != null then format.generate "klipper.cfg" cfg.settings else cfg.configFile;
};
services.klipper = mkIf cfg.octoprintIntegration {
user = config.services.octoprint.user;
@ -118,15 +152,34 @@ in
let
klippyArgs = "--input-tty=${cfg.inputTTY}"
+ optionalString (cfg.apiSocket != null) " --api-server=${cfg.apiSocket}";
printerConfigPath =
if cfg.mutableConfig
then cfg.mutableConfigFolder + "/printer.cfg"
else "/etc/klipper.cfg";
printerConfigFile =
if cfg.settings != null
then format.generate "klipper.cfg" cfg.settings
else cfg.configFile;
in
{
description = "Klipper 3D Printer Firmware";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
preStart = ''
mkdir -p ${cfg.mutableConfigFolder}
${lib.optionalString (cfg.mutableConfig) ''
[ -e ${printerConfigPath} ] || {
cp ${printerConfigFile} ${printerConfigPath}
chmod +w ${printerConfigPath}
}
''}
mkdir -p ${cfg.mutableConfigFolder}/gcodes
'';
serviceConfig = {
ExecStart = "${cfg.package}/lib/klipper/klippy.py ${klippyArgs} /etc/klipper.cfg";
ExecStart = "${cfg.package}/lib/klipper/klippy.py ${klippyArgs} ${printerConfigPath}";
RuntimeDirectory = "klipper";
StateDirectory = "klipper";
SupplementaryGroups = [ "dialout" ];
WorkingDirectory = "${cfg.package}/lib";
OOMScoreAdjust = "-999";
@ -134,6 +187,7 @@ in
CPUSchedulingPriority = 99;
IOSchedulingClass = "realtime";
IOSchedulingPriority = 0;
UMask = "0002";
} // (if cfg.user != null then {
Group = cfg.group;
User = cfg.user;
@ -146,8 +200,9 @@ in
environment.systemPackages =
with pkgs;
let
default = a: b: if a != null then a else b;
firmwares = filterAttrs (n: v: v!= null) (mapAttrs
(mcu: { enable, configFile }: if enable then pkgs.klipper-firmware.override {
(mcu: { enable, configFile, serial }: if enable then pkgs.klipper-firmware.override {
mcu = lib.strings.sanitizeDerivationName mcu;
firmwareConfig = configFile;
} else null)
@ -156,11 +211,14 @@ in
(mcu: firmware: pkgs.klipper-flash.override {
mcu = lib.strings.sanitizeDerivationName mcu;
klipper-firmware = firmware;
flashDevice = cfg.settings."${mcu}".serial;
flashDevice = default cfg.firmwares."${mcu}".serial cfg.settings."${mcu}".serial;
firmwareConfig = cfg.firmwares."${mcu}".configFile;
})
firmwares;
in
[ klipper-genconf ] ++ firmwareFlasher ++ attrValues firmwares;
};
meta.maintainers = [
maintainers.cab404
];
}