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.
22 lines
550 B
Nix
22 lines
550 B
Nix
# Common configuration for headless machines (e.g., Amazon EC2
|
|
# instances).
|
|
|
|
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
{
|
|
sound.enable = false;
|
|
boot.vesa = false;
|
|
|
|
# Don't start a tty on the serial consoles.
|
|
systemd.services."serial-getty@ttyS0".enable = false;
|
|
systemd.services."serial-getty@hvc0".enable = false;
|
|
|
|
# Since we can't manually respond to a panic, just reboot.
|
|
boot.kernelParams = [ "panic=1" "boot.panic_on_fail" ];
|
|
|
|
# Don't allow emergency mode, because we don't have a console.
|
|
systemd.enableEmergencyMode = false;
|
|
}
|