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70 lines
1.4 KiB
Nix
70 lines
1.4 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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cfg = config.nix.gc;
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in
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{
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###### interface
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options = {
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nix.gc = {
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automatic = mkOption {
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default = false;
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type = types.bool;
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description = "Automatically run the garbage collector at a specific time.";
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};
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dates = mkOption {
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default = "03:15";
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type = types.uniq types.string;
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description = ''
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Specification (in the format described by
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<citerefentry><refentrytitle>systemd.time</refentrytitle>
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<manvolnum>5</manvolnum></citerefentry>) of the time at
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which the garbage collector will run.
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'';
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};
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options = mkOption {
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default = "";
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example = "--max-freed $((64 * 1024**3))";
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type = types.uniq types.string;
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description = ''
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Options given to <filename>nix-collect-garbage</filename> when the
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garbage collector is run automatically.
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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 = mkMerge [
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{ systemd.services.nix-gc =
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{ description = "Nix Garbage Collector";
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path = [ config.environment.nix ];
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script = "exec nix-collect-garbage ${cfg.options}";
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};
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}
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(mkIf cfg.automatic {
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systemd.timers.nix-gc =
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{ wantedBy = [ "timers.target" ];
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timerConfig.OnCalendar = cfg.dates;
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};
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})
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];
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}
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