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nixpkgs/nixos/modules/profiles/qemu-guest.nix
Matthieu Coudron c27360ae47 qemu-guest: allow to override security.rngd
... otherwise enabling it causes a merge conflict.

Enabling it was necessary to give enough entropy for the sshd daemon in
my libvirt/nixops VM to generate keys see
https://github.com/NixOS/nixops/issues/1199.
2019-09-18 00:35:04 +09:00

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# Common configuration for virtual machines running under QEMU (using
# virtio).
{ lib, ... }:
{
boot.initrd.availableKernelModules = [ "virtio_net" "virtio_pci" "virtio_mmio" "virtio_blk" "virtio_scsi" "9p" "9pnet_virtio" ];
boot.initrd.kernelModules = [ "virtio_balloon" "virtio_console" "virtio_rng" ];
boot.initrd.postDeviceCommands =
''
# Set the system time from the hardware clock to work around a
# bug in qemu-kvm > 1.5.2 (where the VM clock is initialised
# to the *boot time* of the host).
hwclock -s
'';
security.rngd.enable = lib.mkDefault false;
}