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|
{ config, lib, pkgs, ... }:
with lib;
let
autologinArg = optionalString (config.services.mingetty.autologinUser != null) "--autologin ${config.services.mingetty.autologinUser}";
gettyCmd = extraArgs: "@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login ${autologinArg} ${extraArgs}";
in
{
###### interface
options = {
services.mingetty = {
autologinUser = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Username of the account that will be automatically logged in at the console.
If unspecified, a login prompt is shown as usual.
'';
};
greetingLine = mkOption {
type = types.str;
description = ''
Welcome line printed by mingetty.
The default shows current NixOS version label, machine type and tty.
'';
};
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 = {
# Note: this is set here rather than up there so that changing
# nixos.label would not rebuild manual pages
services.mingetty.greetingLine = mkDefault ''<<< Welcome to NixOS ${config.system.nixos.label} (\m) - \l >>>'';
systemd.services."getty@" =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud %I 115200,38400,9600 $TERM")
];
restartIfChanged = false;
};
systemd.services."serial-getty@" =
let speeds = concatStringsSep "," (map toString config.services.mingetty.serialSpeed); in
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "%I ${speeds} $TERM")
];
restartIfChanged = false;
};
systemd.services."container-getty@" =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud pts/%I 115200,38400,9600 $TERM")
];
restartIfChanged = false;
};
systemd.services.console-getty =
{ serviceConfig.ExecStart = [
"" # override upstream default with an empty ExecStart
(gettyCmd "--noclear --keep-baud console 115200,38400,9600 $TERM")
];
serviceConfig.Restart = "always";
restartIfChanged = false;
enable = mkDefault config.boot.isContainer;
};
environment.etc.issue =
{ # Friendly greeting on the virtual consoles.
source = pkgs.writeText "issue" ''
[1;32m${config.services.mingetty.greetingLine}[0m
${config.services.mingetty.helpLine}
'';
};
};
}
|
