Assume versions are normalised in setup.py

setup.py

@@ -49,7 +49,7 @@ from distutils.core import setup
 # Our own imports
 
 from setupbase import (
-    pkg_version,
+    version,
     find_packages,
     find_package_data,
     check_package_data_first,
@@ -75,7 +75,7 @@ languages, sharing, and interactive widgets.
 Read `the documentation <https://jupyter-notebook.readthedocs.org>`_
 for more information.
     """,
-    version         = pkg_version,
+    version         = version,
     scripts         = glob(pjoin('scripts', '*')),
     packages        = find_packages(),
     package_data     = find_package_data(),

setupbase.py

@@ -65,28 +65,8 @@ name = 'notebook'
 version_ns = {}
 execfile(pjoin(repo_root, name, '_version.py'), version_ns)
 
--version = version_ns['__version__']
-def normalized_version(version_info):
-    """Normalize version string
-    
-    Avoids prerelease uploads getting different versions from sdist and bdist,
-    due to setuptools normalization.
-    """
-    v = '.'.join(map(str, version_info[:3]))
-    if len(version_info) == 3:
-        return v
-    extra = version_info[3]
-    if extra.startswith(('a', 'b', 'rc')):
-        sep = ''
-    else:
-        sep = '.'
-    # pip ensures there's number on the end
-    if not extra[-1].isdigit():
-        extra += '0'
-    return v + sep + extra
-
 version = version_ns['__version__']
-pkg_version = normalized_version(version_ns['version_info'])
+
 
 #---------------------------------------------------------------------------
 # Find packages