{ pkgs , diskImageSize ? "22G" , windowsImage ? null , autoUnattendParams ? {} , impureMode ? false , installCommands ? [] , users ? {} , ... }@attrs: let lib = pkgs.lib; utils = import ./utils.nix { inherit pkgs; }; libguestfs = pkgs.libguestfs-with-appliance; # p7zip on >20.03 has known vulns but we have no better option p7zip = pkgs.p7zip.overrideAttrs(old: { meta = old.meta // { knownVulnerabilities = []; }; }); runQemuCommand = name: command: ( pkgs.runCommandNoCC name { buildInputs = [ p7zip utils.qemu libguestfs ]; } ( '' if ! test -f; then echo "KVM not available, bailing out" >> /dev/stderr exit 1 fi '' + command ) ); windowsIso = if windowsImage != null then windowsImage else pkgs.fetchurl { url = "https://software-download.microsoft.com/download/sg/17763.107.101029-1455.rs5_release_svc_refresh_CLIENT_LTSC_EVAL_x64FRE_en-us.iso"; sha256 = "668fe1af70c2f7416328aee3a0bb066b12dc6bbd2576f40f812b95741e18bc3a"; }; openSshServerPackage = ./openssh/server-package.cab; autounattend = import ./autounattend.nix ( attrs // { inherit pkgs; users = users // { wfvm = { password = "1234"; description = "WFVM Administrator"; groups = [ "Administrators" ]; }; }; } ); bundleInstaller = pkgs.callPackage ./bundle {}; # Packages required to drive installation of other packages bootstrapPkgs = runQemuCommand "bootstrap-win-pkgs.img" '' mkdir -p pkgs/fod cp ${bundleInstaller} pkgs/"$(stripHash "${bundleInstaller}")" # Install optional windows features cp ${openSshServerPackage} pkgs/fod/OpenSSH-Server-Package~31bf3856ad364e35~amd64~~.cab # SSH setup script goes here because windows XML parser sucks cp ${autounattend.setupScript} pkgs/ssh-setup.ps1 virt-make-fs --partition --type=fat pkgs/ $out ''; installScript = pkgs.writeScript "windows-install-script" ( let qemuParams = utils.mkQemuFlags (lib.optional (!impureMode) "-display none" ++ [ # "CD" drive with bootstrap pkgs "-drive" "id=virtio-win,file=${bootstrapPkgs},if=none,format=raw,readonly=on" "-device" "usb-storage,drive=virtio-win" # USB boot "-drive" "id=win-install,file=usbimage.img,if=none,format=raw,readonly=on" "-device" "usb-storage,drive=win-install" # Output image "-drive" "file=c.img,index=0,media=disk,cache=unsafe" # Network "-netdev user,id=n1,net=192.168.1.0/24,restrict=on" ]); in '' #!${pkgs.runtimeShell} set -euxo pipefail export PATH=${lib.makeBinPath [ p7zip utils.qemu libguestfs ]}:$PATH # Create a bootable "USB" image # Booting in USB mode circumvents the "press any key to boot from cdrom" prompt # # Also embed the autounattend answer file in this image mkdir -p win mkdir -p win/nix-win 7z x -y ${windowsIso} -owin cp ${autounattend.autounattendXML} win/autounattend.xml virt-make-fs --partition --type=fat win/ usbimage.img rm -rf win # Qemu requires files to be rw qemu-img create -f qcow2 c.img ${diskImageSize} qemu-system-x86_64 ${lib.concatStringsSep " " qemuParams} '' ); baseImage = pkgs.runCommandNoCC "windows.img" {} '' ${installScript} mv c.img $out ''; finalImage = builtins.foldl' (acc: v: pkgs.runCommandNoCC "${v.name}.img" { buildInputs = with utils; [ qemu win-wait win-exec win-put ] ++ (v.buildInputs or []); } (let script = pkgs.writeScript "${v.name}-script" v.script; qemuParams = utils.mkQemuFlags (lib.optional (!impureMode) "-display none" ++ [ # Output image "-drive" "file=c.img,index=0,media=disk,cache=unsafe" # Network - enable SSH forwarding "-netdev user,id=n1,net=192.168.1.0/24,restrict=on,hostfwd=tcp::2022-:22" ]); in '' # Create an image referencing the previous image in the chain qemu-img create -f qcow2 -b ${acc} c.img set -m qemu-system-x86_64 ${lib.concatStringsSep " " qemuParams} & win-wait echo "Executing script to build layer..." ${script} echo "Layer script done" echo "Shutting down..." win-exec 'shutdown /s' echo "Waiting for VM to terminate..." fg echo "Done" mv c.img $out '')) baseImage installCommands; in # impureMode is meant for debugging the base image, not the full incremental build process if !(impureMode) then finalImage else assert installCommands == []; installScript