51 lines
1.1 KiB
Nix
51 lines
1.1 KiB
Nix
{ config, lib, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.nix.optimise;
|
|
in
|
|
|
|
{
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
|
|
nix.optimise = {
|
|
|
|
automatic = mkOption {
|
|
default = false;
|
|
type = types.bool;
|
|
description = "Automatically run the nix store optimiser at a specific time.";
|
|
};
|
|
|
|
dates = mkOption {
|
|
default = ["03:45"];
|
|
type = types.listOf types.str;
|
|
description = ''
|
|
Specification (in the format described by
|
|
<citerefentry><refentrytitle>systemd.time</refentrytitle>
|
|
<manvolnum>7</manvolnum></citerefentry>) of the time at
|
|
which the optimiser will run.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = {
|
|
|
|
systemd.services.nix-optimise =
|
|
{ description = "Nix Store Optimiser";
|
|
# No point this if the nix daemon (and thus the nix store) is outside
|
|
unitConfig.ConditionPathIsReadWrite = "/nix/var/nix/daemon-socket";
|
|
serviceConfig.ExecStart = "${config.nix.package}/bin/nix-store --optimise";
|
|
startAt = optionals cfg.automatic cfg.dates;
|
|
};
|
|
|
|
};
|
|
|
|
}
|