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https://github.com/NixOS/nixpkgs.git
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4729d5d7f6
Allow building other than Legacy-BIOS-only Proxmox images. Default is unchanged. To build UEFI proxmox image use: proxmox.qemuConf.bios = "ovmf"; (default is "seabios") To build image bootable using both "seabios" and "ovmf" use: partitionTableType = "hybrid"; BIOS can be switched in Proxmox between "seabios" and "ovmf" and VM still boots. (GRUB2-only, systemd-boot does not boot under "seabios") To build systemd-boot UEFI image: proxmox.qemuConf.bios = "ovmf"; boot.loader.systemd-boot.enable = true;
255 lines
8.8 KiB
Nix
255 lines
8.8 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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{
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options.proxmox = {
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qemuConf = {
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# essential configs
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boot = mkOption {
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type = types.str;
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default = "";
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example = "order=scsi0;net0";
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description = lib.mdDoc ''
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Default boot device. PVE will try all devices in its default order if this value is empty.
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'';
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};
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scsihw = mkOption {
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type = types.str;
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default = "virtio-scsi-pci";
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example = "lsi";
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description = lib.mdDoc ''
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SCSI controller type. Must be one of the supported values given in
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<https://pve.proxmox.com/wiki/Qemu/KVM_Virtual_Machines>
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'';
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};
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virtio0 = mkOption {
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type = types.str;
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default = "local-lvm:vm-9999-disk-0";
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example = "ceph:vm-123-disk-0";
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description = lib.mdDoc ''
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Configuration for the default virtio disk. It can be used as a cue for PVE to autodetect the target sotrage.
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This parameter is required by PVE even if it isn't used.
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'';
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};
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ostype = mkOption {
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type = types.str;
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default = "l26";
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description = lib.mdDoc ''
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Guest OS type
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'';
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};
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cores = mkOption {
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type = types.ints.positive;
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default = 1;
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description = lib.mdDoc ''
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Guest core count
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'';
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};
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memory = mkOption {
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type = types.ints.positive;
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default = 1024;
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description = lib.mdDoc ''
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Guest memory in MB
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'';
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};
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bios = mkOption {
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type = types.enum [ "seabios" "ovmf" ];
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default = "seabios";
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description = ''
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Select BIOS implementation (seabios = Legacy BIOS, ovmf = UEFI).
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'';
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};
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# optional configs
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name = mkOption {
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type = types.str;
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default = "nixos-${config.system.nixos.label}";
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description = lib.mdDoc ''
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VM name
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'';
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};
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net0 = mkOption {
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type = types.commas;
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default = "virtio=00:00:00:00:00:00,bridge=vmbr0,firewall=1";
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description = lib.mdDoc ''
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Configuration for the default interface. When restoring from VMA, check the
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"unique" box to ensure device mac is randomized.
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'';
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};
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serial0 = mkOption {
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type = types.str;
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default = "socket";
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example = "/dev/ttyS0";
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description = lib.mdDoc ''
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Create a serial device inside the VM (n is 0 to 3), and pass through a host serial device (i.e. /dev/ttyS0),
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or create a unix socket on the host side (use qm terminal to open a terminal connection).
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'';
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};
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agent = mkOption {
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type = types.bool;
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apply = x: if x then "1" else "0";
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default = true;
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description = lib.mdDoc ''
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Expect guest to have qemu agent running
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'';
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};
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};
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qemuExtraConf = mkOption {
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type = with types; attrsOf (oneOf [ str int ]);
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default = {};
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example = literalExpression ''{
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cpu = "host";
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onboot = 1;
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}'';
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description = lib.mdDoc ''
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Additional options appended to qemu-server.conf
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'';
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};
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partitionTableType = mkOption {
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type = types.enum [ "efi" "hybrid" "legacy" "legacy+gpt" ];
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description = ''
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Partition table type to use. See make-disk-image.nix partitionTableType for details.
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Defaults to 'legacy' for 'proxmox.qemuConf.bios="seabios"' (default), other bios values defaults to 'efi'.
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Use 'hybrid' to build grub-based hybrid bios+efi images.
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'';
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default = if config.proxmox.qemuConf.bios == "seabios" then "legacy" else "efi";
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defaultText = lib.literalExpression ''if config.proxmox.qemuConf.bios == "seabios" then "legacy" else "efi"'';
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example = "hybrid";
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};
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filenameSuffix = mkOption {
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type = types.str;
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default = config.proxmox.qemuConf.name;
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example = "999-nixos_template";
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description = lib.mdDoc ''
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Filename of the image will be vzdump-qemu-''${filenameSuffix}.vma.zstd.
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This will also determine the default name of the VM on restoring the VMA.
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Start this value with a number if you want the VMA to be detected as a backup of
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any specific VMID.
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'';
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};
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};
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config = let
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cfg = config.proxmox;
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cfgLine = name: value: ''
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${name}: ${builtins.toString value}
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'';
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cfgFile = fileName: properties: pkgs.writeTextDir fileName ''
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# generated by NixOS
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${lib.concatStrings (lib.mapAttrsToList cfgLine properties)}
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#qmdump#map:virtio0:drive-virtio0:local-lvm:raw:
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'';
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inherit (cfg) partitionTableType;
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supportEfi = partitionTableType == "efi" || partitionTableType == "hybrid";
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supportBios = partitionTableType == "legacy" || partitionTableType == "hybrid" || partitionTableType == "legacy+gpt";
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hasBootPartition = partitionTableType == "efi" || partitionTableType == "hybrid";
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hasNoFsPartition = partitionTableType == "hybrid" || partitionTableType == "legacy+gpt";
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in {
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assertions = [
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{
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assertion = config.boot.loader.systemd-boot.enable -> config.proxmox.qemuConf.bios == "ovmf";
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message = "systemd-boot requires 'ovmf' bios";
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}
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{
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assertion = partitionTableType == "efi" -> config.proxmox.qemuConf.bios == "ovmf";
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message = "'efi' disk partitioning requires 'ovmf' bios";
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}
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{
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assertion = partitionTableType == "legacy" -> config.proxmox.qemuConf.bios == "seabios";
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message = "'legacy' disk partitioning requires 'seabios' bios";
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}
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{
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assertion = partitionTableType == "legacy+gpt" -> config.proxmox.qemuConf.bios == "seabios";
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message = "'legacy+gpt' disk partitioning requires 'seabios' bios";
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}
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];
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system.build.VMA = import ../../lib/make-disk-image.nix {
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name = "proxmox-${cfg.filenameSuffix}";
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inherit partitionTableType;
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postVM = let
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# Build qemu with PVE's patch that adds support for the VMA format
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vma = (pkgs.qemu_kvm.override {
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alsaSupport = false;
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pulseSupport = false;
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sdlSupport = false;
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jackSupport = false;
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gtkSupport = false;
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vncSupport = false;
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smartcardSupport = false;
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spiceSupport = false;
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ncursesSupport = false;
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libiscsiSupport = false;
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tpmSupport = false;
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numaSupport = false;
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seccompSupport = false;
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guestAgentSupport = false;
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}).overrideAttrs ( super: rec {
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version = "7.0.0";
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src = pkgs.fetchurl {
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url= "https://download.qemu.org/qemu-${version}.tar.xz";
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sha256 = "sha256-9rN1x5UfcoQCeYsLqrsthkeMpT1Eztvvq74cRr9G+Dk=";
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};
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patches = [
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(pkgs.fetchpatch {
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url =
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let
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rev = "1976ca460796f28447b41e3618e5c1e234035dd5";
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path = "debian/patches/pve/0026-PVE-Backup-add-vma-backup-format-code.patch";
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in "https://git.proxmox.com/?p=pve-qemu.git;a=blob_plain;hb=${rev};f=${path}";
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hash = "sha256-2Dz+ceTwrcyYYxi76RtyY3v15/2pwGcDhFuoZWlgbjc=";
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})
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];
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buildInputs = super.buildInputs ++ [ pkgs.libuuid ];
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});
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in
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''
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${vma}/bin/vma create "vzdump-qemu-${cfg.filenameSuffix}.vma" \
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-c ${cfgFile "qemu-server.conf" (cfg.qemuConf // cfg.qemuExtraConf)}/qemu-server.conf drive-virtio0=$diskImage
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rm $diskImage
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${pkgs.zstd}/bin/zstd "vzdump-qemu-${cfg.filenameSuffix}.vma"
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mv "vzdump-qemu-${cfg.filenameSuffix}.vma.zst" $out/
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mkdir -p $out/nix-support
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echo "file vma $out/vzdump-qemu-${cfg.filenameSuffix}.vma.zst" >> $out/nix-support/hydra-build-products
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'';
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format = "raw";
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inherit config lib pkgs;
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};
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boot = {
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growPartition = true;
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kernelParams = [ "console=ttyS0" ];
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loader.grub = {
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device = lib.mkDefault (if (hasNoFsPartition || supportBios) then
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# Even if there is a separate no-fs partition ("/dev/disk/by-partlabel/no-fs" i.e. "/dev/vda2"),
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# which will be used the bootloader, do not set it as loader.grub.device.
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# GRUB installation fails, unless the whole disk is selected.
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"/dev/vda"
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else
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"nodev");
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efiSupport = lib.mkDefault supportEfi;
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efiInstallAsRemovable = lib.mkDefault supportEfi;
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};
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loader.timeout = 0;
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initrd.availableKernelModules = [ "uas" "virtio_blk" "virtio_pci" ];
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};
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fileSystems."/" = {
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device = "/dev/disk/by-label/nixos";
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autoResize = true;
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fsType = "ext4";
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};
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fileSystems."/boot" = lib.mkIf hasBootPartition {
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device = "/dev/disk/by-label/ESP";
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fsType = "vfat";
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};
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services.qemuGuest.enable = lib.mkDefault true;
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};
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}
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