nixpkgs-suyu/nixos/modules/services/ttys/agetty.nix
Eelco Dolstra 179acfb664 Allow upstream systemd units to be extended
If you define a unit, and either systemd or a package in
systemd.packages already provides that unit, then we now generate a
file /etc/systemd/system/<unit>.d/overrides.conf. This makes it
possible to use upstream units, while allowing them to be customised
from the NixOS configuration. For instance, the module nix-daemon.nix
now uses the units provided by the Nix package. And all unit
definitions that duplicated upstream systemd units are finally gone.

This makes the baseUnit option unnecessary, so I've removed it.
2014-04-17 18:52:31 +02:00

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{ config, lib, pkgs, ... }:
with lib;
{
###### interface
options = {
services.mingetty = {
greetingLine = mkOption {
type = types.str;
default = ''<<< Welcome to NixOS ${config.system.nixosVersion} (\m) - \l >>>'';
description = ''
Welcome line printed by mingetty.
'';
};
helpLine = mkOption {
type = types.lines;
default = "";
description = ''
Help line printed by mingetty below the welcome line.
Used by the installation CD to give some hints on
how to proceed.
'';
};
serialSpeed = mkOption {
type = types.listOf types.int;
default = [ 115200 57600 38400 9600 ];
example = [ 38400 9600 ];
description = ''
Bitrates to allow for agetty's listening on serial ports. Listing more
bitrates gives more interoperability but at the cost of long delays
for getting a sync on the line.
'';
};
};
};
###### implementation
config = {
systemd.services."getty@" =
{ serviceConfig.ExecStart = "@${pkgs.utillinux}/sbin/agetty agetty --noclear --login-program ${pkgs.shadow}/bin/login --keep-baud %I 115200,38400,9600 $TERM";
restartIfChanged = false;
};
systemd.services."serial-getty@" =
{ serviceConfig.ExecStart =
let speeds = concatStringsSep "," (map toString config.services.mingetty.serialSpeed);
in "@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login %I ${speeds} $TERM";
restartIfChanged = false;
};
systemd.services."container-getty@" =
{ unitConfig.ConditionPathExists = "/dev/pts/%I"; # Work around being respawned when "machinectl login" exits.
serviceConfig.ExecStart = "@${pkgs.utillinux}/sbin/agetty agetty --noclear --login-program ${pkgs.shadow}/bin/login --keep-baud pts/%I 115200,38400,9600 $TERM";
restartIfChanged = false;
};
environment.etc = singleton
{ # Friendly greeting on the virtual consoles.
source = pkgs.writeText "issue" ''
${config.services.mingetty.greetingLine}
${config.services.mingetty.helpLine}
'';
target = "issue";
};
};
}