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29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
112 lines
2.9 KiB
Nix
112 lines
2.9 KiB
Nix
# Configuration for `ssmtp', a trivial mail transfer agent that can
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# replace sendmail/postfix on simple systems. It delivers email
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# directly to an SMTP server defined in its configuration file, wihout
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# queueing mail locally.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.networking.defaultMailServer;
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in
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{
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options = {
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networking.defaultMailServer = {
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directDelivery = mkOption {
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default = false;
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example = true;
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description = ''
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Use the trivial Mail Transfer Agent (MTA)
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<command>ssmtp</command> package to allow programs to send
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e-mail. If you don't want to run a “real” MTA like
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<command>sendmail</command> or <command>postfix</command> on
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your machine, set this option to <literal>true</literal>, and
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set the option
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<option>networking.defaultMailServer.hostName</option> to the
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host name of your preferred mail server.
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'';
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};
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hostName = mkOption {
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example = "mail.example.org";
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description = ''
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The host name of the default mail server to use to deliver
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e-mail.
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'';
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};
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domain = mkOption {
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default = "";
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example = "example.org";
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description = ''
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The domain from which mail will appear to be sent.
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'';
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};
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useTLS = mkOption {
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default = false;
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example = true;
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description = ''
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Whether TLS should be used to connect to the default mail
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server.
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'';
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};
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useSTARTTLS = mkOption {
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default = false;
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example = true;
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description = ''
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Whether the STARTTLS should be used to connect to the default
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mail server. (This is needed for TLS-capable mail servers
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running on the default SMTP port 25.)
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'';
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};
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authUser = mkOption {
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default = "";
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example = "foo@example.org";
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description = ''
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Username used for SMTP auth. Leave blank to disable.
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'';
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};
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authPass = mkOption {
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default = "";
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example = "correctHorseBatteryStaple";
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description = ''
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Password used for SMTP auth. (STORED PLAIN TEXT, WORLD-READABLE IN NIX STORE)
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'';
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};
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};
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};
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config = mkIf cfg.directDelivery {
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environment.etc."ssmtp/ssmtp.conf".text =
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''
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MailHub=${cfg.hostName}
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FromLineOverride=YES
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${if cfg.domain != "" then "rewriteDomain=${cfg.domain}" else ""}
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UseTLS=${if cfg.useTLS then "YES" else "NO"}
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UseSTARTTLS=${if cfg.useSTARTTLS then "YES" else "NO"}
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#Debug=YES
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${if cfg.authUser != "" then "AuthUser=${cfg.authUser}" else ""}
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${if cfg.authPass != "" then "AuthPass=${cfg.authPass}" else ""}
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'';
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environment.systemPackages = [pkgs.ssmtp];
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};
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}
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