anchor.diff:    makeBootTest = name: extraConfig:
       let
         machineConfig = pythonDict ({
  -        qemuBinary = qemuBinary pkgs.qemu_test;
  +        qemuBinary = qemu-common.qemuBinary pkgs.qemu_test;
           qemuFlags = "-m 768";
         } // extraConfig);
       in
  
positive.code:         ];
        };
        machineConfig = pythonDict ({
          qemuBinary = qemuBinary pkgs.qemu_test;
          qemuFlags = "-boot order=n -m 2000";
          netBackendArgs = "tftp=${ipxeBootDir},bootfile=netboot.ipxe";
        } // extraConfig);
  
negative.code: }:
  
  with import ../lib/testing-python.nix { inherit system pkgs; };
  with pkgs.lib;
  
  let
    qemu-common = import ../lib/qemu-common.nix { inherit (pkgs) lib pkgs; };
  
    iso =
      (import ../lib/eval-config.nix {
  