Convert to pbr setup

It turns out that our current setup does not really support the `sdist`
Python packaging step. I'm trying to increase automation, both for
making releases for upload to pypi.org, and also for CI via Zuul. As it
turns out, Zuul comes with a set of predefined jobs which -- by default
-- use `tox`, and tox was having troubles dealing with our `setup.py`
because it also assumes that the `sdist` step works. It is also supposed
to:

- fix version number duplication in `setup.py`,
- fix version number duplication in Sphinx docs,
- prevent the need to write a `MANIFEST.in` manually.

TL;DR: insetad of having to deal with a ton of other creative
boilerplate, use tools for lazy people like me, and PBR ("Python Build
Reasonableness") appears to check the marks here.

Change-Id: I27c36c4f6b0e76857d16f7819ec237e9b811476a

docs/conf.py

@@ -32,7 +32,9 @@ sys.path.insert(0, os.path.abspath('../'))
 # ones.
 extensions = ['sphinx.ext.autodoc',
     'sphinx.ext.mathjax',
-    'sphinx.ext.githubpages','sphinxcontrib.bibtex']
+    'sphinx.ext.githubpages',
+    'sphinxcontrib.bibtex',
+    'pbr.sphinxext',]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -51,15 +53,6 @@ project = 'gnpy'
 copyright = '2018, Telecom InfraProject - OOPT PSE Group'
 author = 'Telecom InfraProject - OOPT PSE Group'
 
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
-# The short X.Y version.
-version = '0.1'
-# The full version, including alpha/beta/rc tags.
-release = '0.1'
-
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #

requirements.txt

@@ -4,6 +4,7 @@ matplotlib>=3.1.0,<4
 networkx>=2.3,<3
 numpy>=1.16.1,<2
 pandas==0.24.2
+pbr>=5.4.4,<6
 Pygments>=2.4.2,<3
 pytest>=4.0.0,<5
 scipy>=1.3.0,<2

setup.cfg

@@ -0,0 +1,44 @@
+[metadata]
+name = gnpy
+description = Route planning and optimization tool for mesh optical networks
+description-file = README.rst
+description-content-type = text/x-rst; charset=UTF-8
+author = Telecom Infra Project
+author-email = jan.kundrat@telecominfraproject.com
+license = BSD-3-Clause
+home-page = https://github.com/Telecominfraproject/oopt-gnpy
+project_urls =
+    Bug Tracker = https://github.com/Telecominfraproject/oopt-gnpy/issues
+    Documentation = https://gnpy.readthedocs.io/
+python-requires = >=3.6
+classifier =
+    Development Status :: 3 - Alpha
+    Intended Audience :: Developers
+    Intended Audience :: Science/Research
+    Intended Audience :: Telecommunications Industry
+    License :: OSI Approved :: BSD License
+    Natural Language :: English
+    Programming Language :: Python
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: Implementation :: CPython
+    Topic :: Scientific/Engineering
+    Topic :: Scientific/Engineering :: Physics
+keywords =
+    optics
+    network
+    fiber
+    communication
+    route
+    planning
+    optimization
+
+[pbr]
+warnerrors = True
+
+[files]
+packages = gnpy
+data_files =
+	examples = examples/*
+# FIXME: solve example data files
+# FIXME: add example scripts ("entry points")

setup.py

@@ -1,39 +1,5 @@
 #!/usr/bin/python3
 
-from codecs import open
-from os import path
-from setuptools import setup, find_packages
+import setuptools
 
-here = path.abspath(path.dirname(__file__))
-
-with open(path.join(here, 'README.rst'), encoding='utf-8') as f:
-    long_description = f.read()
-
-setup(
-    name='gnpy',
-    version='2.1',
-    description='route planning and optimization tool for mesh optical networks',
-    long_description=long_description,
-    long_description_content_type='text/x-rst; charset=UTF-8',
-    url='https://github.com/Telecominfraproject/gnpy',
-    author='Telecom Infra Project',
-    author_email='jan.kundrat@telecominfraproject.com',
-    classifiers=[
-        'Development Status :: 3 - Alpha',
-        'Intended Audience :: Developers',
-        'Intended Audience :: Science/Research',
-        'Intended Audience :: Telecommunications Industry',
-        'License :: OSI Approved :: BSD License',
-        'Natural Language :: English',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 3 :: Only',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Topic :: Scientific/Engineering',
-        'Topic :: Scientific/Engineering :: Physics',
-    ],
-    keywords='optics network fiber communication route planning optimization',
-    #packages=find_packages(exclude=['examples', 'docs', 'tests']),  # Required
-    packages=find_packages(exclude=['docs', 'tests']),  # Required
-    install_requires=list(open('requirements.txt'))
-)
+setuptools.setup(setup_requires=['pbr'], pbr=True)