Let people use setupy.py without (py)pandoc, but emit warning

cxfreeze_setup.py

@@ -21,9 +21,18 @@
 
 from cx_Freeze import setup, Executable
 import os, site, sys, importlib
-import pypandoc
 import glob
 
+try:
+      from pypandoc import convert_file
+except ImportError:
+      print("WARNING no pypandoc, long description will NOT BE AVAILABLE in rst format")
+
+      from shutil import copyfile
+      def convert_file(filename, ext):
+            copyfile(filename, os.path.splitext(filename)[0] + '.' + ext)
+
+
 IS_POSIX = os.name == 'posix'
 IS_MAC_OS = sys.platform == 'darwin'
 IS_WINDOWS = os.name == 'nt'
@@ -128,7 +137,7 @@
 setup(name='pympress',
       version=pkg_meta.__version__,
       description='A simple dual-screen PDF reader designed for presentations',
-      long_description = pypandoc.convert_file('README.md', 'rst'),
+      long_description = convert_file('README.md', 'rst'),
       author='Cimbali, Thomas Jost, Christof Rath, Epithumia',
       author_email='me@cimba.li',
       url='https://github.com/Cimbali/pympress/',

setup.py

@@ -22,15 +22,23 @@
 
 from setuptools import setup
 import glob, sys, os.path, importlib
-import pypandoc
+
+try:
+      from pypandoc import convert_file
+except ImportError:
+      print("WARNING no pypandoc, long description will NOT BE AVAILABLE in rst format")
+
+      from shutil import copyfile
+      def convert_file(filename, ext):
+            copyfile(filename, os.path.splitext(filename)[0] + '.' + ext)
 
 #get version
 pkg_meta = importlib.import_module('pympress.__init__')
 
 setup(name='pympress',
       version=pkg_meta.__version__,
       description='A simple dual-screen PDF reader designed for presentations',
-      long_description = pypandoc.convert_file('README.md', 'rst'),
+      long_description = convert_file('README.md', 'rst'),
       author='Cimbali, Thomas Jost, Christof Rath, Epithumia',
       author_email='me@cimba.li',
       url='https://github.com/Cimbali/pympress/',