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#!/usr/bin/env python
from distutils.command.build_ext import build_ext
from distutils.errors import CCompilerError, DistutilsExecError, \
DistutilsPlatformError
import os
import platform
import sys
from setuptools import setup, Extension, Feature
# this imports PROJECT, URL, VERSION, AUTHOR, AUTHOR_EMAIL, LICENSE,
# DOWNLOAD_URL
with open('scss/scss_meta.py', 'rb') as f:
exec(f.read())
# Dependencies
install_requires = ['six']
if sys.version_info < (3, 4):
install_requires.append('enum34')
install_requires.append('pathlib')
if sys.version_info < (2, 7):
install_requires.append('ordereddict')
# fail safe compilation shamelessly stolen from the simplejson
# setup.py file. Original author: Bob Ippolito
speedups = Feature(
'optional C speed-enhancement module',
standard=True,
ext_modules=[
# NOTE: header files are included by MANIFEST.in; Extension does not
# include headers in an sdist (since they're typically in /usr/lib)
Extension(
'scss.grammar._scanner',
sources=['scss/src/_speedups.c', 'scss/src/block_locator.c', 'scss/src/scanner.c', 'scss/src/hashtable.c'],
libraries=['pcre']
),
],
)
ext_errors = (CCompilerError, DistutilsExecError, DistutilsPlatformError)
if sys.platform == 'win32' and sys.version_info > (2, 6):
# 2.6's distutils.msvc9compiler can raise an IOError when failing to
# find the compiler
ext_errors += (IOError,)
class BuildFailed(Exception):
pass
class ve_build_ext(build_ext):
"""This class allows C extension building to fail."""
def run(self):
try:
build_ext.run(self)
except DistutilsPlatformError:
raise BuildFailed()
def build_extension(self, ext):
try:
build_ext.build_extension(self, ext)
except ext_errors:
raise BuildFailed()
except ValueError:
# this can happen on Windows 64 bit, see Python issue 7511
if "'path'" in str(sys.exc_info()[1]): # works with Python 2 and 3
raise BuildFailed()
raise
def echo(msg=''):
sys.stdout.write(msg + '\n')
def read(fname):
try:
with open(os.path.join(os.path.dirname(__file__), fname), 'rb') as f:
return f.read().decode('utf8').strip()
except IOError:
return ''
def run_setup(with_binary):
features = {}
if with_binary:
features['speedups'] = speedups
setup(
name=PROJECT,
version=VERSION,
description=read('DESCRIPTION'),
long_description=read('README.rst'),
author=AUTHOR,
author_email=AUTHOR_EMAIL,
url=URL,
download_url=DOWNLOAD_URL,
license=LICENSE,
keywords='css oocss xcss sass scss less precompiler',
classifiers=[
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Developers",
"License :: OSI Approved :: MIT License",
"Operating System :: OS Independent",
"Programming Language :: Python",
"Programming Language :: Python :: 3",
"Topic :: Software Development :: Code Generators",
"Topic :: Text Processing :: Markup",
"Topic :: Software Development :: Libraries :: Python Modules"
],
install_requires=install_requires,
packages=[
'scss',
'scss.extension',
'scss.extension.compass',
'scss.grammar',
],
cmdclass={'build_ext': ve_build_ext},
features=features,
entry_points="""
[console_scripts]
pyscss = scss.tool:main
""",
)
def try_building_extension():
try:
run_setup(True)
except BuildFailed:
LINE = '=' * 74
BUILD_EXT_WARNING = 'WARNING: The C extension could not be ' \
'compiled, speedups are not enabled.'
echo(LINE)
echo(BUILD_EXT_WARNING)
echo('Failure information, if any, is above.')
echo('Retrying the build without the C extension now.')
echo()
run_setup(False)
echo(LINE)
echo(BUILD_EXT_WARNING)
echo('pyScss will still work fine, but may be slower.')
echo(
'The most likely cause is missing PCRE headers; you may need to '
'install libpcre or libpcre-dev, depending on your platform.'
)
echo('Plain-Python installation succeeded.')
echo(LINE)
if platform.python_implementation() == 'CPython':
try_building_extension()
else:
run_setup(False)
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