nixpkgs/nixos/modules/services/misc/home-assistant.nix
2018-01-31 12:30:31 +01:00

91 lines
2.6 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.home-assistant;
configFile = pkgs.writeText "configuration.yaml" (builtins.toJSON cfg.config);
in {
meta.maintainers = with maintainers; [ dotlambda ];
options.services.home-assistant = {
enable = mkEnableOption "Home Assistant";
configDir = mkOption {
default = "/var/lib/hass";
type = types.path;
description = "The config directory, where your <filename>configuration.yaml</filename> is located.";
};
config = mkOption {
default = null;
type = with types; nullOr attrs;
example = literalExample ''
{
homeassistant = {
name = "Home";
time_zone = "UTC";
};
frontend = { };
http = { };
}
'';
description = ''
Your <filename>configuration.yaml</filename> as a Nix attribute set.
Beware that setting this option will delete your previous <filename>configuration.yaml</filename>.
'';
};
package = mkOption {
default = pkgs.home-assistant;
defaultText = "pkgs.home-assistant";
type = types.package;
example = literalExample ''
pkgs.home-assistant.override {
extraPackages = ps: with ps; [ colorlog ];
}
'';
description = ''
Home Assistant package to use.
Most Home Assistant components require additional dependencies,
which are best specified by overriding <literal>pkgs.home-assistant</literal>.
You can find the dependencies by searching for failed imports in your log or by looking at this list:
<link xlink:href="https://github.com/home-assistant/home-assistant/blob/master/requirements_all.txt"/>
'';
};
};
config = mkIf cfg.enable {
systemd.services.home-assistant = {
description = "Home Assistant";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
preStart = lib.optionalString (cfg.config != null) ''
rm -f ${cfg.configDir}/configuration.yaml
ln -s ${configFile} ${cfg.configDir}/configuration.yaml
'';
serviceConfig = {
ExecStart = ''
${cfg.package}/bin/hass --config "${cfg.configDir}"
'';
User = "hass";
Group = "hass";
Restart = "on-failure";
ProtectSystem = "strict";
ReadWritePaths = "${cfg.configDir}";
PrivateTmp = true;
};
};
users.extraUsers.hass = {
home = cfg.configDir;
createHome = true;
group = "hass";
uid = config.ids.uids.hass;
};
users.extraGroups.hass.gid = config.ids.gids.hass;
};
}