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|
{ lib, pkgs, config, ... }:
with lib;
let
cfg = config.services.lemmy;
settingsFormat = pkgs.formats.json { };
in
{
meta.maintainers = with maintainers; [ happysalada ];
# Don't edit the docbook xml directly, edit the md and generate it:
# `pandoc lemmy.md -t docbook --top-level-division=chapter --extract-media=media -f markdown+smart > lemmy.xml`
meta.doc = ./lemmy.xml;
options.services.lemmy = {
enable = mkEnableOption "lemmy a federated alternative to reddit in rust";
jwtSecretPath = mkOption {
type = types.path;
description = "Path to read the jwt secret from.";
};
ui = {
port = mkOption {
type = types.port;
default = 1234;
description = "Port where lemmy-ui should listen for incoming requests.";
};
};
caddy.enable = mkEnableOption "exposing lemmy with the caddy reverse proxy";
settings = mkOption {
default = { };
description = "Lemmy configuration";
type = types.submodule {
freeformType = settingsFormat.type;
options.hostname = mkOption {
type = types.str;
default = null;
description = "The domain name of your instance (eg 'lemmy.ml').";
};
options.port = mkOption {
type = types.port;
default = 8536;
description = "Port where lemmy should listen for incoming requests.";
};
options.federation = {
enabled = mkEnableOption "activitypub federation";
};
options.captcha = {
enabled = mkOption {
type = types.bool;
default = true;
description = "Enable Captcha.";
};
difficulty = mkOption {
type = types.enum [ "easy" "medium" "hard" ];
default = "medium";
description = "The difficultly of the captcha to solve.";
};
};
options.database.createLocally = mkEnableOption "creation of database on the instance";
};
};
};
config =
let
localPostgres = (cfg.settings.database.host == "localhost" || cfg.settings.database.host == "/run/postgresql");
in
lib.mkIf cfg.enable {
services.lemmy.settings = (mapAttrs (name: mkDefault)
{
bind = "127.0.0.1";
tls_enabled = true;
pictrs_url = with config.services.pict-rs; "http://${address}:${toString port}";
actor_name_max_length = 20;
rate_limit.message = 180;
rate_limit.message_per_second = 60;
rate_limit.post = 6;
rate_limit.post_per_second = 600;
rate_limit.register = 3;
rate_limit.register_per_second = 3600;
rate_limit.image = 6;
rate_limit.image_per_second = 3600;
} // {
database = mapAttrs (name: mkDefault) {
user = "lemmy";
host = "/run/postgresql";
port = 5432;
database = "lemmy";
pool_size = 5;
};
});
services.postgresql = mkIf localPostgres {
enable = mkDefault true;
};
services.pict-rs.enable = true;
services.caddy = mkIf cfg.caddy.enable {
enable = mkDefault true;
virtualHosts."${cfg.settings.hostname}" = {
extraConfig = ''
handle_path /static/* {
root * ${pkgs.lemmy-ui}/dist
file_server
}
@for_backend {
path /api/* /pictrs/* feeds/* nodeinfo/*
}
handle @for_backend {
reverse_proxy 127.0.0.1:${toString cfg.settings.port}
}
@post {
method POST
}
handle @post {
reverse_proxy 127.0.0.1:${toString cfg.settings.port}
}
@jsonld {
header Accept "application/activity+json"
header Accept "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\""
}
handle @jsonld {
reverse_proxy 127.0.0.1:${toString cfg.settings.port}
}
handle {
reverse_proxy 127.0.0.1:${toString cfg.ui.port}
}
'';
};
};
assertions = [{
assertion = cfg.settings.database.createLocally -> localPostgres;
message = "if you want to create the database locally, you need to use a local database";
}];
systemd.services.lemmy = {
description = "Lemmy server";
environment = {
LEMMY_CONFIG_LOCATION = "/run/lemmy/config.hjson";
# Verify how this is used, and don't put the password in the nix store
LEMMY_DATABASE_URL = with cfg.settings.database;"postgres:///${database}?host=${host}";
};
documentation = [
"https://join-lemmy.org/docs/en/administration/from_scratch.html"
"https://join-lemmy.org/docs"
];
wantedBy = [ "multi-user.target" ];
after = [ "pict-rs.service " ] ++ lib.optionals cfg.settings.database.createLocally [ "lemmy-postgresql.service" ];
requires = lib.optionals cfg.settings.database.createLocally [ "lemmy-postgresql.service" ];
# script is needed here since loadcredential is not accessible on ExecPreStart
script = ''
${pkgs.coreutils}/bin/install -m 600 ${settingsFormat.generate "config.hjson" cfg.settings} /run/lemmy/config.hjson
jwtSecret="$(< $CREDENTIALS_DIRECTORY/jwt_secret )"
${pkgs.jq}/bin/jq ".jwt_secret = \"$jwtSecret\"" /run/lemmy/config.hjson | ${pkgs.moreutils}/bin/sponge /run/lemmy/config.hjson
${pkgs.lemmy-server}/bin/lemmy_server
'';
serviceConfig = {
DynamicUser = true;
RuntimeDirectory = "lemmy";
LoadCredential = "jwt_secret:${cfg.jwtSecretPath}";
};
};
systemd.services.lemmy-ui = {
description = "Lemmy ui";
environment = {
LEMMY_UI_HOST = "127.0.0.1:${toString cfg.ui.port}";
LEMMY_INTERNAL_HOST = "127.0.0.1:${toString cfg.settings.port}";
LEMMY_EXTERNAL_HOST = cfg.settings.hostname;
LEMMY_HTTPS = "false";
};
documentation = [
"https://join-lemmy.org/docs/en/administration/from_scratch.html"
"https://join-lemmy.org/docs"
];
wantedBy = [ "multi-user.target" ];
after = [ "lemmy.service" ];
requires = [ "lemmy.service" ];
serviceConfig = {
DynamicUser = true;
WorkingDirectory = "${pkgs.lemmy-ui}";
ExecStart = "${pkgs.nodejs}/bin/node ${pkgs.lemmy-ui}/dist/js/server.js";
};
};
systemd.services.lemmy-postgresql = mkIf cfg.settings.database.createLocally {
description = "Lemmy postgresql db";
after = [ "postgresql.service" ];
partOf = [ "lemmy.service" ];
script = with cfg.settings.database; ''
PSQL() {
${config.services.postgresql.package}/bin/psql --port=${toString cfg.settings.database.port} "$@"
}
# check if the database already exists
if ! PSQL -lqt | ${pkgs.coreutils}/bin/cut -d \| -f 1 | ${pkgs.gnugrep}/bin/grep -qw ${database} ; then
PSQL -tAc "CREATE ROLE ${user} WITH LOGIN;"
PSQL -tAc "CREATE DATABASE ${database} WITH OWNER ${user};"
fi
'';
serviceConfig = {
User = config.services.postgresql.superUser;
Type = "oneshot";
RemainAfterExit = true;
};
};
};
}
|