setup.py

import re, os, time

PACKAGE_PATH = os.path.dirname(os.path.abspath(os.path.dirname(__file__)))

pattern = re.compile("^( *)\$\{include (\.\/)?(\w+\/)*(\w+\.\w+)\} *$", re.MULTILINE)
start_from = "make/_init.py"
code = ""
last_dir_name = ""
with open(os.path.join(PACKAGE_PATH, start_from)) as data_file :
  code = data_file.read()
  last_dir_name = os.path.abspath(os.path.dirname(os.path.join(PACKAGE_PATH, start_from)))

def compile_code(code, last_dir_name_ric, whitespace_ric) :
  lines = code.split("\n")
  code = ""
  for line in lines :
    matching = pattern.match(line)
    if matching :
      whitespace = whitespace_ric + matching.group(1)
      is_from_package_path = matching.group(2)
      path = matching.group(3)
      name = matching.group(4)
      full_path = ""
      if is_from_package_path :
        if path :
          full_path = os.path.join(PACKAGE_PATH, path[0:-1], name)
        else :
          full_path = os.path.join(PACKAGE_PATH, name)
      elif path :
        full_path = os.path.join(last_dir_name_ric, path[0:-1], name)
      else :
        full_path = os.path.join(last_dir_name_ric, name)
      
      new_last_dir_name = os.path.abspath(os.path.dirname(full_path))

      with open(full_path) as file :
        file_code = file.read()
        code += compile_code(file_code, new_last_dir_name, whitespace)

    else :
      code += whitespace_ric+line+"\n" 
  return code

file_name_compiled = "_generated_"+time.strftime("%Y_%m_%d_at_%H_%M_%S")+".py"
with open(os.path.join(PACKAGE_PATH, file_name_compiled), "w+") as data_file :
  data_file.write(compile_code(code, last_dir_name, ""))