97 lines
2.5 KiB
Nix
97 lines
2.5 KiB
Nix
{ config
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, lib
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, pkgs
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, ...
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}:
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let
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cfg = config.programs.nh;
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in
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{
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meta.maintainers = [ lib.maintainers.viperML ];
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options.programs.nh = {
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enable = lib.mkEnableOption "nh, yet another Nix CLI helper";
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package = lib.mkPackageOption pkgs "nh" { };
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flake = lib.mkOption {
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type = lib.types.nullOr lib.types.path;
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default = null;
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description = ''
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The path that will be used for the `FLAKE` environment variable.
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`FLAKE` is used by nh as the default flake for performing actions, like `nh os switch`.
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'';
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};
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clean = {
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enable = lib.mkEnableOption "periodic garbage collection with nh clean all";
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dates = lib.mkOption {
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type = lib.types.singleLineStr;
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default = "weekly";
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description = ''
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How often cleanup is performed. Passed to systemd.time
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The format is described in
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{manpage}`systemd.time(7)`.
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'';
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};
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extraArgs = lib.mkOption {
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type = lib.types.singleLineStr;
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default = "";
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example = "--keep 5 --keep-since 3d";
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description = ''
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Options given to nh clean when the service is run automatically.
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See `nh clean all --help` for more information.
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'';
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};
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};
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};
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config = {
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warnings =
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if (!(cfg.clean.enable -> !config.nix.gc.automatic)) then [
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"programs.nh.clean.enable and nix.gc.automatic are both enabled. Please use one or the other to avoid conflict."
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] else [ ];
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assertions = [
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# Not strictly required but probably a good assertion to have
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{
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assertion = cfg.clean.enable -> cfg.enable;
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message = "programs.nh.clean.enable requires programs.nh.enable";
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}
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{
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assertion = (cfg.flake != null) -> !(lib.hasSuffix ".nix" cfg.flake);
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message = "nh.flake must be a directory, not a nix file";
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}
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];
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environment = lib.mkIf cfg.enable {
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systemPackages = [ cfg.package ];
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variables = lib.mkIf (cfg.flake != null) {
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FLAKE = cfg.flake;
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};
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};
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systemd = lib.mkIf cfg.clean.enable {
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services.nh-clean = {
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description = "Nh clean";
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script = "exec ${lib.getExe cfg.package} clean all ${cfg.clean.extraArgs}";
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startAt = cfg.clean.dates;
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path = [ config.nix.package ];
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serviceConfig.Type = "oneshot";
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};
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timers.nh-clean = {
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timerConfig = {
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Persistent = true;
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};
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};
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};
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};
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}
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