entry point fix

Author: willmcgugan

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [2.0.7] - 2017-08-06
+
+### Fixes
+- Fixed entry point breaking pip
+
 ## [2.0.6] - 2017-08-05
 
 ### Fixes

fs/_version.py

@@ -1 +1 @@
-__version__ = "2.0.6"
+__version__ = "2.0.7"

fs/opener/registry.py

@@ -95,15 +95,22 @@ def __init__(self, default_opener='osfs'):
 
         """
         self.default_opener = default_opener
-        self.protocols = [
-            entry_point.name
-            for entry_point in
-            pkg_resources.iter_entry_points('fs.opener')
-        ]
+        self._protocols = None
+
 
     def __repr__(self):
         return "<fs-registry {!r}>".format(self.protocols)
 
+    @property
+    def protocols(self):
+        if self._protocols is None:
+            self._protocols = [
+                entry_point.name
+                for entry_point in
+                pkg_resources.iter_entry_points('fs.opener')
+            ]
+        return self._protocols
+
     def get_opener(self, protocol):
         """
         Get the opener class associated to a given protocol.