Error during installation on new machine with python 2.7.12

[g-leon]

I am using an Ubuntu 14.04 machine with python 2.7.12. After I have installed hyper I got the following error:

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "/tmp/pip_build_root/cryptography/setup.py", line 335, in <module>

    **keywords_with_side_effects(sys.argv)

  File "/usr/lib/python2.7/distutils/core.py", line 111, in setup

    _setup_distribution = dist = klass(attrs)

  File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 239, in __init__

    self.fetch_build_eggs(attrs.pop('setup_requires'))

  File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 264, in fetch_build_eggs

▽
from hyper import HTTPConnection

    replace_conflicting=True

  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 620, in resolve

    dist = best[req.key] = env.best_match(req, ws, installer)

  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 858, in best_match

    return self.obtain(req, installer) # try and download/install

  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 870, in obtain

    return installer(requirement)

  File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 314, in fetch_build_egg

    return cmd.easy_install(req)

  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 616, in easy_install

    return self.install_item(spec, dist.location, tmpdir, deps)

  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 646, in install_item

    dists = self.install_eggs(spec, download, tmpdir)

  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 834, in install_eggs

    return self.build_and_install(setup_script, setup_base)

  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1040, in build_and_install

    self.run_setup(setup_script, setup_base, args)

  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1028, in run_setup

    raise DistutilsError("Setup script exited with %s" % (v.args[0],))

distutils.errors.DistutilsError: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

----------------------------------------
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/cryptography/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-JfgJ9U-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/cryptography
Storing debug log for failure in /root/.pip/pip.log

If I try to import hyper I get:

Traceback (most recent call last):
  File "/usr/local/bin/hyper", line 7, in <module>
    from hyper.cli import main
  File "/usr/local/lib/python2.7/dist-packages/hyper/__init__.py", line 11, in <module>
    from .common.connection import HTTPConnection
  File "/usr/local/lib/python2.7/dist-packages/hyper/common/connection.py", line 10, in <module>
    from ..http20.connection import HTTP20Connection
  File "/usr/local/lib/python2.7/dist-packages/hyper/http20/connection.py", line 35, in <module>
    TRANSIENT_SSL_ERRORS = (ssl.SSL_ERROR_WANT_READ, ssl.SSL_ERROR_WANT_WRITE)
AttributeError: 'NoneType' object has no attribute 'SSL_ERROR_WANT_READ'

[Cory Benfield]

On Ubuntu 14.04 we need to install the PyOpenSSL and cryptography packages to get a more up-to-date interface to OpenSSL. Can you follow the instructions from here and then reinstall? That should resolve your issue.