85 lines
2.3 KiB
Nix
85 lines
2.3 KiB
Nix
{ pkgs, config, lib, microvm, disko, agenix, machine, machines, dns, nixos-hardware, ... }: {
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imports = [
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microvm.nixosModules.host
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]
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++ lib.lists.optional (machine.isRaspberryPi) nixos-hardware.nixosModules.raspberry-pi-4;
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config = {
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boot = lib.mkIf (machine.isHypervisor) {
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kernelModules = [ "kvm-intel" ];
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extraModulePackages = [ ];
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initrd = {
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availableKernelModules = [
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"ahci"
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"xhci_pci"
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"nvme"
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"usbhid"
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"usb_storage"
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"sd_mod"
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"sdhci_pci"
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];
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kernelModules = [ ];
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};
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loader = {
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systemd-boot.enable = true;
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efi.canTouchEfiVariables = true;
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};
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};
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nixpkgs = {
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config.allowUnfree = true;
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# TODO: do we need this?
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# hostPlatform = machine.arch;
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};
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hardware.cpu.intel.updateMicrocode = lib.mkIf (machine.isHypervisor) config.hardware.enableRedistributableFirmware;
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age.identityPaths = [ "/etc/age_ed25519" ];
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nix = {
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package = pkgs.nixFlakes;
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extraOptions = ''
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experimental-features = nix-command flakes
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'';
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};
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system = {
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stateVersion = "23.05";
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activationScripts.diff = ''
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if [[ -e /run/current-system ]]; then
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${pkgs.nix}/bin/nix store diff-closures /run/current-system "$systemConfig"
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fi
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'';
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};
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microvm.vms =
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let
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vmsForHypervisor = lib.filterAttrs (n: v: v.kind == "virtual" && v.hypervisorName == config.networking.hostName) machines;
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in
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builtins.mapAttrs
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(name: vm:
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{
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# Do not restart virtual machines to apply configuration changes.
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# While conceptually this seems useful, it could result in annoying situations.
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# For example, changing the default VM configuration will restart ALL VMs simultaneously, causing a lot of stress on the servers.
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# Downside of not restarting, is that we may need to do this manually now to apply changes.
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restartIfChanged = false;
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specialArgs = {
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inherit agenix disko pkgs lib microvm dns;
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machine = vm;
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hypervisorConfig = config;
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};
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config.imports = [
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./.
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{ networking.hostName = name; }
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];
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}
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)
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vmsForHypervisor;
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};
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}
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