nixpkgs/nixos/modules/virtualisation/rkt.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.virtualisation.rkt;
in
{
options.virtualisation.rkt = {
enable = mkEnableOption "rkt metadata service";
gc = {
automatic = mkOption {
default = true;
type = types.bool;
description = "Automatically run the garbage collector at a specific time.";
};
dates = mkOption {
default = "03:15";
type = types.str;
description = ''
Specification (in the format described by
<citerefentry><refentrytitle>systemd.time</refentrytitle>
<manvolnum>7</manvolnum></citerefentry>) of the time at
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which the garbage collector will run.
'';
};
options = mkOption {
default = "--grace-period=24h";
type = types.str;
description = ''
Options given to <filename>rkt gc</filename> when the
garbage collector is run automatically.
'';
};
};
};
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.rkt ];
systemd.services.rkt = {
description = "rkt metadata service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart = "${pkgs.rkt}/bin/rkt metadata-service";
};
};
systemd.services.rkt-gc = {
description = "rkt garbage collection";
startAt = optionalString cfg.gc.automatic cfg.gc.dates;
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.rkt}/bin/rkt gc ${cfg.gc.options}";
};
};
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users.groups.rkt = {};
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};
}