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nixos/cross-seed: add 'useGenConfigDefaults'

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This to me is the cleanest way of setting the default value and track
changes to the values from `cross-seed gen-config` with low churn.
This commit is contained in:
Bruno BELANYI 2025-04-13 19:39:22 +01:00
parent 0e9535409d
commit 9cc26fef84
1 changed files with 35 additions and 1 deletions
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36
nixos/modules/services/torrent/cross-seed.nix
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@ -14,6 +14,15 @@ let
types
;
settingsFormat = pkgs.formats.json { };
generatedConfig =
pkgs.runCommand "cross-seed-gen-config" { nativeBuildInputs = [ pkgs.cross-seed ]; }
''
export HOME=$(mktemp -d)
cross-seed gen-config
mkdir $out
cp -r $HOME/.cross-seed/config.js $out/
'';
in
{
options.services.cross-seed = {
@ -40,6 +49,22 @@ in
description = "Cross-seed config directory";
};
useGenConfigDefaults = mkOption {
type = types.bool;
default = false;
description = ''
Whether to use the option defaults from the configuration generated by
{command}`cross-seed gen-config`.
Those are the settings recommended by the project, and can be inspected
from their [template file](https://github.com/cross-seed/cross-seed/blob/master/src/config.template.cjs).
Settings set in {option}`services.cross-seed.settings` and
{option}`services.cross-seed.settingsFile` will override the ones from
this option.
'';
};
settings = mkOption {
default = { };
type = types.submodule {
@ -120,6 +145,13 @@ in
let
jsonSettingsFile = settingsFormat.generate "settings.json" cfg.settings;
genConfigSegment =
lib.optionalString cfg.useGenConfigDefaults # js
''
const gen_config_js = "${generatedConfig}/config.js";
Object.assign(loaded_settings, require(gen_config_js));
'';
# Since cross-seed uses a javascript config file, we can use node's
# ability to parse JSON directly to avoid having to do any conversion.
# This also means we don't need to use any external programs to merge the
@ -138,7 +170,9 @@ in
"use strict";
const fs = require("fs");
const settings_json = "${jsonSettingsFile}";
let loaded_settings = JSON.parse(fs.readFileSync(settings_json, "utf8"));
let loaded_settings = {};
${genConfigSegment}
Object.assign(loaded_settings, JSON.parse(fs.readFileSync(settings_json, "utf8")));
${secretSettingsSegment}
module.exports = loaded_settings;
'';