Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 134, in main
    status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 241, in run
    requirement_set.install(install_options, global_options, root=options.root_path)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1298, in install
    requirement.install(install_options, global_options, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 625, in install
    cwd=self.source_dir, filter_stdout=self._filter_install, show_stdout=False)
  File "/usr/lib/python2.7/dist-packages/pip/util.py", line 670, in call_subprocess
    % (command_desc, proc.returncode, cwd))
InstallationError: Command /usr/bin/python -c "import setuptools;__file__='/tmp/pip_build_root/pyopencl/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-KB0TXJ-record/install-record.txt --single-version-externally-managed failed with error code 1 in /tmp/pip_build_root/pyopencl