anchor.diff:    virshCmds = concatStringsSep ";" (flatten [
       "net-create $build/libvirt/net-test.xml"
       (map (name: "create $build/libvirt/dom-${name}.xml --autodestroy") instNames)
  -    "event --timeout ${toString cfg.timeout} --domain $testid --event lifecycle"
  +    "event --timeout ${toString cfg.timeout} --domain dom-$testid --event lifecycle"
       "net-destroy net-$testid"
     ]);
   
  
positive.code:         # Variables that are substituted within the libvirt XML files
          testid="$(basename "$out")"
          testid="''${testid%%-*}"
          build="$(pwd)/build"
          uid="$(id -u)"
          gid="$(id -g)"
  
negative.code:   config = {
  
      libvirt.test.instances.${cfg.test-driver.hostName} = {
        libvirt.name = mkForce "dom-@testid@";
        nixos.modules = cfg.test-driver.extraModules ++ [{
          systemd.services.test-script = {
            wantedBy = [ "multi-user.target" ];
  