nixpkgs/nixos/modules/services/mail/rss2email.nix
pennae 2e751c0772 treewide: automatically md-convert option descriptions
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.
2022-07-30 15:16:34 +02:00

136 lines
3.4 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.rss2email;
in {
###### interface
options = {
services.rss2email = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Whether to enable rss2email.";
};
to = mkOption {
type = types.str;
description = lib.mdDoc "Mail address to which to send emails";
};
interval = mkOption {
type = types.str;
default = "12h";
description = lib.mdDoc "How often to check the feeds, in systemd interval format";
};
config = mkOption {
type = with types; attrsOf (oneOf [ str int bool ]);
default = {};
description = lib.mdDoc ''
The configuration to give rss2email.
Default will use system-wide `sendmail` to send the
email. This is rss2email's default when running
`r2e new`.
This set contains key-value associations that will be set in the
`[DEFAULT]` block along with the
`to` parameter.
See `man r2e` for more information on which
parameters are accepted.
'';
};
feeds = mkOption {
description = lib.mdDoc "The feeds to watch.";
type = types.attrsOf (types.submodule {
options = {
url = mkOption {
type = types.str;
description = lib.mdDoc "The URL at which to fetch the feed.";
};
to = mkOption {
type = with types; nullOr str;
default = null;
description = lib.mdDoc ''
Email address to which to send feed items.
If `null`, this will not be set in the
configuration file, and rss2email will make it default to
`rss2email.to`.
'';
};
};
});
};
};
};
###### implementation
config = mkIf cfg.enable {
users.groups = {
rss2email.gid = config.ids.gids.rss2email;
};
users.users = {
rss2email = {
description = "rss2email user";
uid = config.ids.uids.rss2email;
group = "rss2email";
};
};
environment.systemPackages = with pkgs; [ rss2email ];
services.rss2email.config.to = cfg.to;
systemd.tmpfiles.rules = [
"d /var/rss2email 0700 rss2email rss2email - -"
];
systemd.services.rss2email = let
conf = pkgs.writeText "rss2email.cfg" (lib.generators.toINI {} ({
DEFAULT = cfg.config;
} // lib.mapAttrs' (name: feed: nameValuePair "feed.${name}" (
{ inherit (feed) url; } //
lib.optionalAttrs (feed.to != null) { inherit (feed) to; }
)) cfg.feeds
));
in
{
preStart = ''
cp ${conf} /var/rss2email/conf.cfg
if [ ! -f /var/rss2email/db.json ]; then
echo '{"version":2,"feeds":[]}' > /var/rss2email/db.json
fi
'';
path = [ pkgs.system-sendmail ];
serviceConfig = {
ExecStart =
"${pkgs.rss2email}/bin/r2e -c /var/rss2email/conf.cfg -d /var/rss2email/db.json run";
User = "rss2email";
};
};
systemd.timers.rss2email = {
partOf = [ "rss2email.service" ];
wantedBy = [ "timers.target" ];
timerConfig.OnBootSec = "0";
timerConfig.OnUnitActiveSec = cfg.interval;
};
};
meta.maintainers = with lib.maintainers; [ ekleog ];
}