forked from mirrors/nixpkgs
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.
104 lines
2 KiB
Nix
104 lines
2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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inherit (pkgs) prayer;
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cfg = config.services.prayer;
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stateDir = "/var/lib/prayer";
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prayerUser = "prayer";
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prayerGroup = "prayer";
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prayerExtraCfg = pkgs.writeText "extraprayer.cf" ''
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prefix = "${prayer}"
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var_prefix = "${stateDir}"
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prayer_user = "${prayerUser}"
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prayer_group = "${prayerGroup}"
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sendmail_path = "/var/setuid-wrappers/sendmail"
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use_http_port ${cfg.port}
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${cfg.extraConfig}
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'';
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prayerCfg = pkgs.runCommand "prayer.cf" { } ''
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# We have to remove the http_port 80, or it will start a server there
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cat ${prayer}/etc/prayer.cf | grep -v http_port > $out
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cat ${prayerExtraCfg} >> $out
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'';
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in
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{
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###### interface
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options = {
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services.prayer = {
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enable = mkOption {
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default = false;
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description = ''
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Whether to run the prayer webmail http server.
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'';
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};
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port = mkOption {
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default = "2080";
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description = ''
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Port the prayer http server is listening to.
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'';
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};
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extraConfig = mkOption {
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default = "" ;
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description = ''
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Extra configuration. Contents will be added verbatim to the configuration file.
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'';
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};
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};
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};
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###### implementation
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config = mkIf config.services.prayer.enable {
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environment.systemPackages = [ prayer ];
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users.extraUsers = singleton
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{ name = prayerUser;
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uid = config.ids.uids.prayer;
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description = "Prayer daemon user";
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home = stateDir;
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};
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users.extraGroups = singleton
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{ name = prayerGroup;
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gid = config.ids.gids.prayer;
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};
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jobs.prayer =
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{ name = "prayer";
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startOn = "startup";
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preStart =
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''
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mkdir -m 0755 -p ${stateDir}
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chown ${prayerUser}.${prayerGroup} ${stateDir}
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'';
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daemonType = "daemon";
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exec = "${prayer}/sbin/prayer --config-file=${prayerCfg}";
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};
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};
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}
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