runInLinuxVM.nix

with import <nixpkgs> { };

let
  img = "bzImage";
  hyperkitCommand = ''
    ${hyperkit}/bin/hyperkit \
      -A \
      -m 512M \
      -s 0,hostbridge \
      -s 1,lpc \
      -s 2,virtio-rnd \
      -s 3,virtio-9p,path=${builtins.storeDir},tag=store \
      -s 4,virtio-9p,path=$TMPDIR/xchg,tag=xchg \
      -l com1,stdio \
      -U 8888badf-970e-4577-a6fa-6dd16c9d7798 \
      -f kexec,${(forceSystem "x86_64-linux" "x86_64").linux}/${img},${vmTools.initrd}/initrd,"earlyprintk=serial console=ttyS0 panic=1 command=${vmTools.stage2Init} out=$out mountDisk=$mountDisk loglevel=4"
  '';
  runInLinuxVM = drv: lib.overrideDerivation drv ({ memSize ? 512, QEMU_OPTS ? "", args, builder, ... }: {
    builder = "${bash}/bin/sh";
    args = ["-e" (vmTools.vmRunCommand hyperkitCommand)];
    origArgs = args;
    origBuilder = builder;
    passAsFile = []; # HACK fix - see https://github.com/NixOS/nixpkgs/issues/16742
  });
in
runInLinuxVM hello