Remove use of pkg_resources from osrf_pycommon.

.travis.yml

@@ -5,7 +5,7 @@ python:
   - "3.7"
   - "3.8"
 install:
-  - pip install coverage nose flake8 mock
+  - pip install coverage nose flake8 mock importlib-metadata
   - pip install git+https://github.com/PyCQA/flake8-import-order.git
 script:
   - PYTHONASYNCIODEBUG=1 python setup.py nosetests -s --with-coverage --cover-inclusive

osrf_pycommon/cli_utils/verb_pattern.py

@@ -17,7 +17,7 @@
 import sys
 import inspect
 
-import pkg_resources
+import importlib_metadata
 
 
 def call_prepare_arguments(func, parser, sysargs=None):
@@ -149,7 +149,7 @@ def list_verbs(group):
     :rtype: list of str
     """
     verbs = []
-    for entry_point in pkg_resources.iter_entry_points(group=group):
+    for entry_point in importlib_metadata.entry_points().get(group, []):
         verbs.append(entry_point.name)
     return verbs
 
@@ -162,7 +162,7 @@ def load_verb_description(verb_name, group):
     :returns: verb description
     :rtype: dict
     """
-    for entry_point in pkg_resources.iter_entry_points(group=group):
+    for entry_point in importlib_metadata.entry_points().get(group, []):
         if entry_point.name == verb_name:
             return entry_point.load()
 

package.xml

@@ -10,6 +10,7 @@
 
   <license>Apache License 2.0</license>
 
+  <exec_depend>python3-importlib-metadata</exec_depend>
   <exec_depend>python3-mock</exec_depend>
 
   <export>

setup.py

@@ -1,10 +1,14 @@
+import sys
+
 from setuptools import find_packages
 from setuptools import setup
 
 
 install_requires = [
     'setuptools',
 ]
+if sys.version_info < (3, 8):
+    install_requires.append('importlib-metadata')
 package_excludes = ['tests*', 'docs*']
 packages = find_packages(exclude=package_excludes)
 

stdeb.cfg

@@ -1,5 +1,5 @@
 [DEFAULT]
-Depends3: python3-setuptools
+Depends3: python3-setuptools, python3-importlib-metadata
 Conflicts3: python-osrf-pycommon
 Suite3: xenial yakkety zesty artful bionic cosmic disco eoan focal stretch buster
 X-Python3-Version: >= 3.5