diff options
Diffstat (limited to 'nixpkgs/nixos/modules/services/misc/nix-optimise.nix')
-rw-r--r-- | nixpkgs/nixos/modules/services/misc/nix-optimise.nix | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/misc/nix-optimise.nix b/nixpkgs/nixos/modules/services/misc/nix-optimise.nix new file mode 100644 index 000000000000..416529f690e0 --- /dev/null +++ b/nixpkgs/nixos/modules/services/misc/nix-optimise.nix @@ -0,0 +1,51 @@ +{ 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 running it inside a nixos-container. It should be on the host instead. + unitConfig.ConditionVirtualization = "!container"; + serviceConfig.ExecStart = "${config.nix.package}/bin/nix-store --optimise"; + startAt = optionals cfg.automatic cfg.dates; + }; + + }; + +} |