Drop versioneer

Author: mwcraig

setup.cfg

@@ -1,7 +0,0 @@
-[versioneer]
-VCS = git
-style = pep440
-versionfile_source = vpython/_version.py
-versionfile_build = vpython/_version.py
-tag_prefix =
-parentdir_prefix =

setup.py

@@ -16,16 +16,13 @@
 except ImportError:
     extensions = [Extension('vpython.cyvector', ['vpython/cyvector.c'])]
 
-import versioneer
 
 install_requires = ['jupyter', 'jupyter-server-proxy', 'numpy', 'ipykernel',
                     'autobahn>=18.8.2, <=21.11.1']
 
 setup_args = dict(
     name='vpython',
     packages=['vpython'],
-    version=versioneer.get_version(),
-    cmdclass=versioneer.get_cmdclass(),
     description='VPython for Jupyter Notebook',
     long_description=open('README.md').read(),
     long_description_content_type="text/markdown",

vpython/__init__.py

@@ -1,9 +1,17 @@
-from ._version import get_versions
+from pkg_resources import get_distribution, DistributionNotFound
+
 from .gs_version import glowscript_version
-__version__ = get_versions()['version']
+
+try:
+    __version__ = get_distribution(__name__).version
+except DistributionNotFound:
+    # package is not installed
+    pass
 __gs_version__ = glowscript_version()
-del get_versions
+
 del glowscript_version
+del get_distribution
+del DistributionNotFound
 
 # Keep the remaining imports later to  ensure that __version__ and
 #  __gs_version__ exist before importing vpython, which itself imports