  # >>> ENV
  import ctypes
  import os
  import re
  import sys
  import platform
 
</s> remove     elif OS_VERSION[0] == "Windows":
        tips_2_3()
 </s> add  </s> remove     if OS_VERSION[0] == "Linux":
 </s> add     if OS_VERSION[0] == "Windows": </s> remove             msg = "Installing {}".format(pkg)
 </s> add             if pkg.startswith("dlib"):
                msg = ("Compiling {}. This will take a while...\n"
                       "Please ignore the following UserWarning: "
                       "'Disabling all use of wheels...'".format(pkg))
            else:
                msg = "Installing {}".format(pkg) </s> remove     """ Output Tips """
    out_info("1. Install System Dependencies.\n"
             "In Debian/Ubuntu, try:\n"
             "apt-get install -y cmake libsm6 libxrender1 libxext-dev python3-tk")


def tips_2_3():
 </s> add  </s> remove         REQUIRED_PACKAGES.append(custom_tf)
 </s> add         if custom_tf:
            REQUIRED_PACKAGES.append(custom_tf)
import importlib
  # >>> ENV
  import ctypes
import importlib
  import os
  import re
  import sys
  import platform
keep add keep keep keep keep
 Add gcc/g++ checks for linux. Add more informative output 
setup.py