anchor.diff:    # module, which works correctly in all cases.
     PYTHON_CONFIG = "/invalid";
   
  +  pythonPath = [ python3Packages.dnspython tdb ];
  +
     preBuild = ''
       export MAKEFLAGS="-j $NIX_BUILD_CORES"
     '';
  
positive.code:   ];
  
    nativeBuildInputs = [
      python3
      wafHook
      pkg-config
      bison
  
negative.code:   ];
  
    buildInputs = [
      python3Packages.python
      python3Packages.wrapPython
      readline
      popt
      dbus
  