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https://github.com/ilyakooo0/nixpkgs.git
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897834f015
We might be inside a NixOS container on a non-NixOS host, so instead of not running at all inside a container, check if the nix-daemon socket is writable as it will tell us if the store is managed from here or outside. Fixes #63578
52 lines
1.1 KiB
Nix
52 lines
1.1 KiB
Nix
{ config, lib, ... }:
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with lib;
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let
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cfg = config.nix.optimise;
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in
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{
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###### interface
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options = {
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nix.optimise = {
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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 nix store optimiser at a specific time.";
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};
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dates = mkOption {
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default = ["03:45"];
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type = types.listOf types.str;
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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>7</manvolnum></citerefentry>) of the time at
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which the optimiser will run.
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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 = {
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systemd.services.nix-optimise =
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{ description = "Nix Store Optimiser";
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# No point this if the nix daemon (and thus the nix store) is outside
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unitConfig.ConditionPathIsReadWrite = "/nix/var/nix/daemon-socket";
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serviceConfig.ExecStart = "${config.nix.package}/bin/nix-store --optimise";
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startAt = optionals cfg.automatic cfg.dates;
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};
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};
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}
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