old_contents: Import("env")
  
  # Install custom packages from the PyPi registry
  env.Execute("$PYTHONEXE -m pip install bcf")
  
new_contents: Import("env")
  
  # Install custom packages from the PyPi registry
  env.Execute("$PYTHONEXE -m pip install --upgrade bcf")
  
subject: Update additional_tools_install.py