Files
nixos-config/machine/nixos-virtualbox/configuration.nix
2025-01-06 22:20:04 +01:00

102 lines
2.6 KiB
Nix

{
config,
pkgs,
lib,
outputs,
...
}: {
imports = [
./hardware-configuration.nix
../../configs/common-linux.nix
../../configs/docker.nix
../../configs/user.nix
];
sops = {
defaultSopsFile = ../../secrets/secrets.yaml;
validateSopsFiles = true;
age = {
sshKeyPaths = ["/persist/etc/ssh/ssh_host_ed25519_key"];
generateKey = true;
};
};
time.timeZone = "Europe/Berlin";
boot = {
initrd = {
enable = true;
postResumeCommands = lib.mkAfter ''
mkdir -p /mnt
# We first mount the btrfs root to /mnt
# so we can manipulate btrfs subvolumes.
mount -o subvol=/ /dev/sda2 /mnt
# While we're tempted to just delete /root and create
# a new snapshot from /root-blank, /root is already
# populated at this point with a number of subvolumes,
# which makes `btrfs subvolume delete` fail.
# So, we remove them first.
#
# /root contains subvolumes:
# - /root/var/lib/portables
# - /root/var/lib/machines
#
# I suspect these are related to systemd-nspawn, but
# since I don't use it I'm not 100% sure.
# Anyhow, deleting these subvolumes hasn't resulted
# in any issues so far, except for fairly
# benign-looking errors from systemd-tmpfiles.
btrfs subvolume list -o /mnt/root |
cut -f9 -d' ' |
while read subvolume; do
echo "deleting /$subvolume subvolume..."
btrfs subvolume delete "/mnt/$subvolume"
done &&
echo "deleting /root subvolume..." &&
btrfs subvolume delete /mnt/root
echo "restoring blank /root subvolume..."
btrfs subvolume snapshot /mnt/root-blank /mnt/root
# Once we're done rolling back to a blank snapshot,
# we can unmount /mnt and continue on the boot process.
umount /mnt
'';
};
};
networking = {
networkmanager.enable = true;
hostName = "nixos-virtualbox"; # Define your hostname.
};
nix.settings = {
system-features = [
"nixos-test"
"benchmark"
"big-parallel"
"gccarch-znver3"
];
trusted-substituters = ["https://ai.cachix.org"];
trusted-public-keys = ["ai.cachix.org-1:N9dzRK+alWwoKXQlnn0H6aUx0lU/mspIoz8hMvGvbbc="];
};
# nixpkgs.localSystem = {
# gcc.arch = "znver3";
# gcc.tune = "znver3";
# system = "x86_64-linux";
# };
programs.nix-ld.enable = true;
services = {
# k3s = {
# enable = true;
# role = "server";
# };
};
system.stateVersion = "24.11";
}