anchor.diff:          '';
   
         passthru = driver.passthru;
  +
  +      inherit pos;
       };
   
   
  
positive.code:       driver = mkDriver null;
        driverInteractive = mkDriver pkgs.qemu;
  
        test = passMeta (runTests driver);
  
        nodeNames = builtins.attrNames driver.nodes;
        invalidNodeNames = lib.filter
  
negative.code:       # Skip linting (mainly intended for faster dev cycles)
      , skipLint ? false
      , passthru ? {}
      , # For meta.position
        pos ? # position used in error messages and for meta.position
          (if t.meta.description or null != null
            then builtins.unsafeGetAttrPos "description" t.meta
            else builtins.unsafeGetAttrPos "testScript" t)
      , ...
      } @ t:
      let
  