old_contents: #!/usr/bin/env python
  
  try:
      from setuptools import setup
  except ImportError:
      print('[replot] setuptools not found.')
      raise
  
  with open('replot/constants.py') as fh:
      for line in fh:
          line = line.strip()
          if line.startswith('__VERSION__'):
              version = line.split()[-1][1:-1]
              break
  
  try:
      from pip.req import parse_requirements
      from pip.download import PipSession
  except ImportError:
      print('[replot] pip not found.')
      raise
  
  # parse_requirements() returns generator of pip.req.InstallRequirement objects
  parsed_requirements = parse_requirements("requirements.txt",
                                           session=PipSession())
  
  # reqs is a list of requirement
  # e.g. ['django==1.5.1', 'mezzanine==1.4.6']
  install_requires = [str(ir.req) for ir in parsed_requirements]
  
  setup(
      name='replot',
      version=version,
      url='https://github.com/Phyks/replot/',
      author='Phyks (Lucas Verney)',
      author_email='phyks@phyks.me',
      license='MIT License',
      description='A (sane) Python plotting module, abstracting on top of Matplotlib.',
      packages=['replot'],
      install_requires=install_requires
  )
  
new_contents: #!/usr/bin/env python
  
  try:
      from setuptools import setup
  except ImportError:
      print('[replot] setuptools not found.')
      raise
  
  with open('replot/constants.py') as fh:
      for line in fh:
          line = line.strip()
          if line.startswith('__VERSION__'):
              version = line.split()[-1][1:-1]
              break
  
  try:
      from pip.req import parse_requirements
      from pip.download import PipSession
  except ImportError:
      print('[replot] pip not found.')
      raise
  
  # parse_requirements() returns generator of pip.req.InstallRequirement objects
  parsed_requirements = parse_requirements("requirements.txt",
                                           session=PipSession())
  
  # reqs is a list of requirement
  # e.g. ['django==1.5.1', 'mezzanine==1.4.6']
  install_requires = [str(ir.req) for ir in parsed_requirements]
  
  setup(
      name='replot',
      version=version,
      url='https://github.com/Phyks/replot/',
      author='Phyks (Lucas Verney)',
      author_email='phyks@phyks.me',
      license='MIT License',
      description='A (sane) Python plotting module, abstracting on top of Matplotlib.',
      packages=['replot', 'replot.grid', 'replot.helpers'],
      install_requires=install_requires
  )
  
subject: Fix ImportError when importing after system-wide installation