113 lines
2.8 KiB
Nix
113 lines
2.8 KiB
Nix
{ config, lib, options, pkgs, ... }:
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let
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packageName = "custom-nixos-vm";
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mergedSystemOption =
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with options.system;
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lib.mergeDefinitions
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build.loc
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build.type
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(lib.lists.forEach
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(
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builtins.filter
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(item:
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!(lib.path.hasPrefix ./. (/. + item.file)))
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build.definitionsWithLocations)
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(item: { inherit (item) file value; }));
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vanillaVM = mergedSystemOption.mergedValue.vm;
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createVMWrapper =
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vm:
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if (vm.name == packageName)
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then
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vm
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else
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let
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prefix =
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lib.concatStringsSep " " (
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lib.optionals config.virtualisation.runAsRoot (
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["sudo"] ++
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lib.optional config.virtualisation.qemu.runInBackground "-b"));
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suffix =
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lib.concatStringsSep " " (
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lib.optional
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(!config.virtualisation.runAsRoot && config.virtualisation.qemu.runInBackground)
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"&");
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wrapped = pkgs.writeShellApplication {
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name = "run-${config.system.name}-vm";
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text = ''
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${prefix} ${vm}/bin/run-${config.system.name}-vm ${suffix}
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'';
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};
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in
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pkgs.symlinkJoin {
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name = packageName;
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paths = [ wrapped ];
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};
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in {
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options =
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let
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vmVariantOptions = {
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virtualisation = {
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runAsRoot = lib.mkOption {
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type = lib.types.bool;
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default = false;
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};
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sharedHostKeys = lib.mkOption {
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type = lib.types.bool;
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default = false;
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};
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qemu.runInBackground = lib.mkOption {
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type = lib.types.bool;
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default = false;
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};
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};
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};
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in {
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virtualisation = {
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vmVariant = vmVariantOptions;
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vmVariantWithBootLoader = vmVariantOptions;
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};
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};
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config = {
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virtualisation =
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let
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extendVMConfig =
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vmVariant: {
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boot.loader.efi.efiSysMountPoint = lib.mkVMOverride "/boot";
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virtualisation = {
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runAsRoot = lib.mkIf vmVariant.virtualisation.sharedHostKeys true;
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sharedDirectories = lib.optionalAttrs (vmVariant.virtualisation.sharedHostKeys) {
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hostKeys =
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let
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path = "/etc/ssh";
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in {
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source = path;
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target = path;
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};
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};
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};
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};
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virtualisation = config.virtualisation;
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in {
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vmVariant = extendVMConfig virtualisation.vmVariant;
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vmVariantWithBootLoader = extendVMConfig virtualisation.vmVariantWithBootLoader;
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};
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# Replace native `qemu` with `remote-viewer`
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system.build =
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{
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vm = lib.mkForce (createVMWrapper vanillaVM);
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};
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};
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}
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