diff --git a/setup.py b/setup.py
index f2a3f8bb9..99fab07d8 100644
--- a/setup.py
+++ b/setup.py
@@ -140,6 +140,9 @@ class build_usage(Command):
         # allows us to build docs without the C modules fully loaded during help generation
         if 'BORG_CYTHON_DISABLE' not in os.environ:
             os.environ['BORG_CYTHON_DISABLE'] = self.__class__.__name__
+        from borg.helpers import have_cython
+        print('have_cython? %s' % have_cython())
+        print("CYTHON ENV: %s" % os.environ.get('BORG_CYTHON_DISABLE'))
         from borg.archiver import Archiver
         parser = Archiver().build_parser(prog='borg')
         choices = {}