anchor.diff:  
   if not "%PYTHON_BAT_RUNNER%" == "1" goto :END
   
  -set /p PYTHON_BIN_RELDIR=<%~dp0python_bin_reldir.txt
  +for /f %%i in (%~dp0python_bin_reldir.txt) do set PYTHON_BIN_RELDIR=%%i
   set PATH=%~dp0%PYTHON_BIN_RELDIR%;%~dp0%PYTHON_BIN_RELDIR%\Scripts;%PATH%
   "%~dp0%PYTHON_BIN_RELDIR%\python.exe" %*
   
  
positive.code: setlocal
  set PYTHON_BAT_RUNNER=1
  
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negative.code: :: it set.
  ::
  :: We remedy this in the future by having the batch file load its core paths
  :: from an external file with for/set, removing the need to modify "python.bat"
  :: during upgrade.
  ::
  :: After all of the old batch files are believed to be replaced, we can remove
  