mirror of
https://github.com/NixOS/nixpkgs.git
synced 2025-01-04 03:53:56 +00:00
2e751c0772
the conversion procedure is simple: - find all things that look like options, ie calls to either `mkOption` or `lib.mkOption` that take an attrset. remember the attrset as the option - for all options, find a `description` attribute who's value is not a call to `mdDoc` or `lib.mdDoc` - textually convert the entire value of the attribute to MD with a few simple regexes (the set from mdize-module.sh) - if the change produced a change in the manual output, discard - if the change kept the manual unchanged, add some text to the description to make sure we've actually found an option. if the manual changes this time, keep the converted description this procedure converts 80% of nixos options to markdown. around 2000 options remain to be inspected, but most of those fail the "does not change the manual output check": currently the MD conversion process does not faithfully convert docbook tags like <code> and <package>, so any option using such tags will not be converted at all.
107 lines
2.8 KiB
Nix
107 lines
2.8 KiB
Nix
{ config, lib, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.nix.gc;
|
|
in
|
|
|
|
{
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
|
|
nix.gc = {
|
|
|
|
automatic = mkOption {
|
|
default = false;
|
|
type = types.bool;
|
|
description = lib.mdDoc "Automatically run the garbage collector at a specific time.";
|
|
};
|
|
|
|
dates = mkOption {
|
|
type = types.str;
|
|
default = "03:15";
|
|
example = "weekly";
|
|
description = ''
|
|
How often or when garbage collection is performed. For most desktop and server systems
|
|
a sufficient garbage collection is once a week.
|
|
|
|
The format is described in
|
|
<citerefentry><refentrytitle>systemd.time</refentrytitle>
|
|
<manvolnum>7</manvolnum></citerefentry>.
|
|
'';
|
|
};
|
|
|
|
randomizedDelaySec = mkOption {
|
|
default = "0";
|
|
type = types.str;
|
|
example = "45min";
|
|
description = ''
|
|
Add a randomized delay before each garbage collection.
|
|
The delay will be chosen between zero and this value.
|
|
This value must be a time span in the format specified by
|
|
<citerefentry><refentrytitle>systemd.time</refentrytitle>
|
|
<manvolnum>7</manvolnum></citerefentry>
|
|
'';
|
|
};
|
|
|
|
persistent = mkOption {
|
|
default = true;
|
|
type = types.bool;
|
|
example = false;
|
|
description = lib.mdDoc ''
|
|
Takes a boolean argument. If true, the time when the service
|
|
unit was last triggered is stored on disk. When the timer is
|
|
activated, the service unit is triggered immediately if it
|
|
would have been triggered at least once during the time when
|
|
the timer was inactive. Such triggering is nonetheless
|
|
subject to the delay imposed by RandomizedDelaySec=. This is
|
|
useful to catch up on missed runs of the service when the
|
|
system was powered down.
|
|
'';
|
|
};
|
|
|
|
options = mkOption {
|
|
default = "";
|
|
example = "--max-freed $((64 * 1024**3))";
|
|
type = types.str;
|
|
description = lib.mdDoc ''
|
|
Options given to {file}`nix-collect-garbage` when the
|
|
garbage collector is run automatically.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = {
|
|
assertions = [
|
|
{
|
|
assertion = cfg.automatic -> config.nix.enable;
|
|
message = ''nix.gc.automatic requires nix.enable'';
|
|
}
|
|
];
|
|
|
|
systemd.services.nix-gc = lib.mkIf config.nix.enable {
|
|
description = "Nix Garbage Collector";
|
|
script = "exec ${config.nix.package.out}/bin/nix-collect-garbage ${cfg.options}";
|
|
startAt = optional cfg.automatic cfg.dates;
|
|
};
|
|
|
|
systemd.timers.nix-gc = lib.mkIf cfg.automatic {
|
|
timerConfig = {
|
|
RandomizedDelaySec = cfg.randomizedDelaySec;
|
|
Persistent = cfg.persistent;
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
}
|