diff options
Diffstat (limited to 'nixos/modules/services/misc/nix-gc.nix')
-rw-r--r-- | nixos/modules/services/misc/nix-gc.nix | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/nixos/modules/services/misc/nix-gc.nix b/nixos/modules/services/misc/nix-gc.nix new file mode 100644 index 000000000000..fa20e0956f59 --- /dev/null +++ b/nixos/modules/services/misc/nix-gc.nix @@ -0,0 +1,61 @@ +{ config, pkgs, ... }: + +with pkgs.lib; + +let + cfg = config.nix.gc; +in + +{ + + ###### interface + + options = { + + nix.gc = { + + automatic = mkOption { + default = false; + 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>5</manvolnum></citerefentry>) of the time at + which the garbage collector will run. + ''; + }; + + options = mkOption { + default = ""; + example = "--max-freed $((64 * 1024**3))"; + type = types.str; + description = '' + Options given to <filename>nix-collect-garbage</filename> when the + garbage collector is run automatically. + ''; + }; + + }; + + }; + + + ###### implementation + + config = { + + systemd.services.nix-gc = + { description = "Nix Garbage Collector"; + script = "exec ${config.nix.package}/bin/nix-collect-garbage ${cfg.options}"; + startAt = optionalString cfg.automatic cfg.dates; + }; + + }; + +} |