Index: nbformat-4.0.1/setup.py
===================================================================
--- nbformat-4.0.1/setup.py
+++ nbformat-4.0.1/setup.py	2016-04-18 16:51:32.678390995 +0200
@@ -83,8 +83,7 @@
     ],
 )
 
-if 'develop' in sys.argv or any(a.startswith('bdist') for a in sys.argv):
-    import setuptools
+import setuptools
 
 setuptools_args = {}
 install_requires = setuptools_args['install_requires'] = [