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nixpkgs/nixos/modules/programs/msmtp.nix
pacien 93335aa252 nixos/msmtp: add msmtp module
This adds a module for msmtp, a simple SMTP client which provides a
sendmail-compatible interface.

GitHub: see also nixpkgs issue #105710
2020-12-03 22:23:20 +01:00

105 lines
2.8 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.msmtp;
in {
meta.maintainers = with maintainers; [ pacien ];
options = {
programs.msmtp = {
enable = mkEnableOption "msmtp - an SMTP client";
setSendmail = mkOption {
type = types.bool;
default = true;
description = ''
Whether to set the system sendmail to msmtp's.
'';
};
defaults = mkOption {
type = types.attrs;
default = {};
example = {
aliases = "/etc/aliases";
port = 587;
tls = true;
};
description = ''
Default values applied to all accounts.
See msmtp(1) for the available options.
'';
};
accounts = mkOption {
type = with types; attrsOf attrs;
default = {};
example = {
"default" = {
host = "smtp.example";
auth = true;
user = "someone";
passwordeval = "cat /secrets/password.txt";
};
};
description = ''
Named accounts and their respective configurations.
The special name "default" allows a default account to be defined.
See msmtp(1) for the available options.
Use `programs.msmtp.extraConfig` instead of this attribute set-based
option if ordered account inheritance is needed.
It is advised to use the `passwordeval` setting to read the password
from a secret file to avoid having it written in the world-readable
nix store. The password file must end with a newline (`\n`).
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Extra lines to add to the msmtp configuration verbatim.
See msmtp(1) for the syntax and available options.
'';
};
};
};
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.msmtp ];
services.mail.sendmailSetuidWrapper = mkIf cfg.setSendmail {
program = "sendmail";
source = "${pkgs.msmtp}/bin/sendmail";
setuid = false;
setgid = false;
};
environment.etc."msmtprc".text = let
mkValueString = v:
if v == true then "on"
else if v == false then "off"
else generators.mkValueStringDefault {} v;
mkKeyValueString = k: v: "${k} ${mkValueString v}";
mkInnerSectionString =
attrs: concatStringsSep "\n" (mapAttrsToList mkKeyValueString attrs);
mkAccountString = name: attrs: ''
account ${name}
${mkInnerSectionString attrs}
'';
in ''
defaults
${mkInnerSectionString cfg.defaults}
${concatStringsSep "\n" (mapAttrsToList mkAccountString cfg.accounts)}
${cfg.extraConfig}
'';
};
}