Rely on importlib_metadata to load version from package metadata. Rem…

…oves implicit dependency on setuptools/pkg_resources.

CHANGES.rst

@@ -1,3 +1,11 @@
+17.1
+====
+
+* Rely on
+  `importlib_metadata <https://pypi.org/project/importlib_metadata/>`_
+  for loading version from metadata. Removes implicit dependency on
+  setuptools and pkg_resources.
+
 17.0
 ====
 

irc/client.py

@@ -66,11 +66,7 @@
 from jaraco.functools import Throttler
 from jaraco.stream import buffer
 from more_itertools.recipes import consume
-
-try:
-    import pkg_resources
-except ImportError:
-    pass
+import importlib_metadata
 
 from . import connection
 from . import events
@@ -83,7 +79,7 @@
 
 # set the version tuple
 try:
-    VERSION_STRING = pkg_resources.require('irc')[0].version
+    VERSION_STRING = importlib_metadata.version('irc')
     VERSION = tuple(int(res) for res in re.findall(r'\d+', VERSION_STRING))
 except Exception:
     VERSION_STRING = 'unknown'

setup.py

@@ -38,6 +38,7 @@
         'pytz',
         'more_itertools',
         'tempora>=1.6',
+        'importlib_metadata',
     ],
     extras_require={
         'testing': [