selfprivacy-nixos-config/social/pleroma-module.nix

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2021-11-15 10:02:05 +00:00
{ config, options, lib, pkgs, stdenv, ... }:
let
cfg = config.services.pleroma;
in
{
options = {
services.pleroma = with lib; {
enable = mkEnableOption "pleroma";
package = mkOption {
type = types.package;
default = pkgs.pleroma-otp;
description = "Pleroma package to use.";
};
user = mkOption {
type = types.str;
default = "pleroma";
description = "User account under which pleroma runs.";
};
group = mkOption {
type = types.str;
default = "pleroma";
description = "Group account under which pleroma runs.";
};
stateDir = mkOption {
type = types.str;
default = "/var/lib/pleroma";
readOnly = true;
description = "Directory where the pleroma service will save the uploads and static files.";
};
configs = mkOption {
type = with types; listOf str;
description = ''
Pleroma public configuration.
This list gets appended from left to
right into /etc/pleroma/config.exs. Elixir evaluates its
configuration imperatively, meaning you can override a
setting by appending a new str to this NixOS option list.
<emphasis>DO NOT STORE ANY PLEROMA SECRET
HERE</emphasis>, use
<link linkend="opt-services.pleroma.secretConfigFile">services.pleroma.secretConfigFile</link>
instead.
This setting is going to be stored in a file part of
the Nix store. The Nix store being world-readable, it's not
the right place to store any secret
Have a look to Pleroma section in the NixOS manual for more
informations.
'';
};
secretConfigFile = mkOption {
type = types.str;
default = "/var/lib/pleroma/secrets.exs";
description = ''
Path to the file containing your secret pleroma configuration.
<emphasis>DO NOT POINT THIS OPTION TO THE NIX
STORE</emphasis>, the store being world-readable, it'll
compromise all your secrets.
'';
};
};
};
config = lib.mkIf cfg.enable {
users = {
users."${cfg.user}" = {
description = "Pleroma user";
home = cfg.stateDir;
extraGroups = [ cfg.group ];
};
groups."${cfg.group}" = { };
};
environment.systemPackages = [ cfg.package ];
environment.etc."/pleroma/config.exs".text = ''
${lib.concatMapStrings (x: "${x}") cfg.configs}
# The lau/tzdata library is trying to download the latest
# timezone database in the OTP priv directory by default.
# This directory being in the store, it's read-only.
# Setting that up to a more appropriate location.
config :tzdata, :data_dir, "/var/lib/pleroma/elixir_tzdata_data"
import_config "${cfg.secretConfigFile}"
'';
systemd.services.pleroma = {
description = "Pleroma social network";
after = [ "network-online.target" "postgresql.service" ];
wantedBy = [ "multi-user.target" ];
restartTriggers = [ config.environment.etc."/pleroma/config.exs".source ];
serviceConfig = {
User = cfg.user;
Group = cfg.group;
Type = "exec";
WorkingDirectory = "~";
StateDirectory = "pleroma pleroma/static pleroma/uploads";
StateDirectoryMode = "700";
# Checking the conf file is there then running the database
# migration before each service start, just in case there are
# some pending ones.
#
# It's sub-optimal as we'll always run this, even if pleroma
# has not been updated. But the no-op process is pretty fast.
# Better be safe than sorry migration-wise.
ExecStartPre =
let preScript = pkgs.writers.writeBashBin "pleromaStartPre"
"${cfg.package}/bin/pleroma_ctl migrate";
in "${preScript}/bin/pleromaStartPre";
ExecStart = "${cfg.package}/bin/pleroma start";
ExecStop = "${cfg.package}/bin/pleroma stop";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
# Systemd sandboxing directives.
# Taken from the upstream contrib systemd service at
# pleroma/installation/pleroma.service
PrivateTmp = true;
ProtectHome = true;
ProtectSystem = "full";
PrivateDevices = false;
NoNewPrivileges = true;
CapabilityBoundingSet = "~CAP_SYS_ADMIN";
};
};
};
meta.maintainers = with lib.maintainers; [ ninjatrappeur ];
}