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