setup.py

#!/usr/bin/env python
from __future__ import print_function
from setuptools import setup, find_packages, Command
from setuptools.command.sdist import sdist
from setuptools.command.build_py import build_py
from setuptools.command.egg_info import egg_info
from subprocess import check_call
import os
import sys
import platform
from distutils import log
from jupyter_sigplot import _version

here = os.path.dirname(os.path.abspath(__file__))
node_root = os.path.join(here, 'js')
is_repo = os.path.exists(os.path.join(here, '.git'))

npm_path = os.pathsep.join([
    os.path.join(node_root, 'node_modules', '.bin'),
    os.environ.get('PATH', os.defpath),
])

log.set_verbosity(log.DEBUG)
log.info('setup.py entered')
log.info('$PATH=%s' % os.environ['PATH'])

with open('README.rst') as f:
    LONG_DESCRIPTION = f.read()


def js_prerelease(command, strict=False):
    """decorator for building minified js/css prior to another command"""

    class DecoratedCommand(command):
        def run(self):
            jsdeps = self.distribution.get_command_obj('jsdeps')
            if not is_repo and all(os.path.exists(t) for t in jsdeps.targets):
                # sdist, nothing to do
                command.run(self)
                return

            try:
                self.distribution.run_command('jsdeps')
            except Exception as e:
                missing = [t for t in jsdeps.targets if not os.path.exists(t)]
                if strict or missing:
                    log.warn('rebuilding js and css failed')
                    if missing:
                        log.error('missing files: %s' % missing)
                    raise e
                else:
                    log.warn('rebuilding js and css failed (not a problem)')
                    log.warn(str(e))
            command.run(self)
            update_package_data(self.distribution)

    return DecoratedCommand


def update_package_data(distribution):
    """update package_data to catch changes during setup"""
    build_py = distribution.get_command_obj('build_py')
    # distribution.package_data = find_package_data()
    # re-init build_py options which load package_data
    build_py.finalize_options()


class NPM(Command):
    description = 'install package.json dependencies using npm'

    user_options = []

    node_modules = os.path.join(node_root, 'node_modules')

    targets = [
        os.path.join(here, 'jupyter_sigplot', 'static', 'extension.js'),
        os.path.join(here, 'jupyter_sigplot', 'static', 'index.js')
    ]

    def initialize_options(self):
        pass

    def finalize_options(self):
        pass

    def get_npm_name(self):
        npmName = 'npm'
        if platform.system() == 'Windows':
            npmName = 'npm.cmd'

        return npmName

    def has_npm(self):
        npmName = self.get_npm_name()
        try:
            check_call([npmName, '--version'])
            return True
        except Exception:
            return False

    def should_run_npm_install(self):
        return self.has_npm()

    def run(self):
        has_npm = self.has_npm()
        if not has_npm:
            log.error("`npm` unavailable.  If you're running this command "
                      "using sudo, make sure `npm` is available to sudo")

        env = os.environ.copy()
        env['PATH'] = npm_path

        if self.should_run_npm_install():
            log.info("Installing build dependencies with npm.  "
                     "This may take a while...")
            npmName = self.get_npm_name()
            check_call([npmName, 'install'],
                       cwd=node_root,
                       stdout=sys.stdout,
                       stderr=sys.stderr)
            os.utime(self.node_modules, None)

        for t in self.targets:
            if not os.path.exists(t):
                msg = 'Missing file: %s' % t
                if not has_npm:
                    msg += '\nnpm is required to build a development '
                    msg += 'version of a widget extension'
                raise ValueError(msg)

        # update package data in case this created new files
        update_package_data(self.distribution)


with open('requirements.txt') as requirements_file:
    requirements = map(str.strip, requirements_file.readlines())

setup_args = {
    'name': 'jupyter_sigplot',
    'version': _version.__version__,
    'description': 'Jupyter Notebook Widget for the SigPlot plotting library',
    'long_description': LONG_DESCRIPTION,
    'include_package_data': True,
    'data_files': [(
        'share/jupyter/nbextensions/jupyter_sigplot',
        [
            'jupyter_sigplot/static/extension.js',
            'jupyter_sigplot/static/index.js',
            'jupyter_sigplot/static/index.js.map',
        ],
    ), ('etc/jupyter/nbconfig/notebook.d/', ['jupyter_sigplot.json'])],
    'install_requires': requirements,
    'packages': find_packages(),
    'zip_safe': False,
    'cmdclass': {
        'build_py': js_prerelease(build_py),
        'egg_info': js_prerelease(egg_info),
        'sdist': js_prerelease(sdist, strict=True),
        'jsdeps': NPM,
    },
    'author': 'LGS Innovations',
    'author_email': 'sigplot@lgsinnovations.com',
    'url': 'https://github.com/LGSInnovations/jupyter-sigplot',
    'keywords': [
        'ipython', 'jupyter', 'widgets', 'sigplot', 'plot', 'plotting', 'dsp',
        'sdr', 'software defined radio'
    ],
    'classifiers': [
        'Development Status :: 4 - Beta',
        'Framework :: IPython',
        'Intended Audience :: Developers',
        'Intended Audience :: Science/Research',
        'Topic :: Multimedia :: Graphics',
        'Programming Language :: Python :: 2',
        'Programming Language :: Python :: 2.7',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.3',
        'Programming Language :: Python :: 3.4',
        'Programming Language :: Python :: 3.5',
    ],
}

setup(**setup_args)