[pypy-issue] Issue #2931: PyPy3.5 Stable Unable to Install -SystemError: unexpected internal exception (pypy/pypy)

[Michael Peacock]

New issue 2931: PyPy3.5 Stable Unable to Install -SystemError: unexpected internal exception
https://bitbucket.org/pypy/pypy/issues/2931/pypy35-stable-unable-to-install

Michael Peacock:

Using PyPy3.5 Stable
pip        18.1
setuptools 40.6.3
Windows 10  Build 17134 (1803)


Unable to install some packages, feel like I've tried everything and can't seem to find anything on the problem I'm getting, Quick bug query to the Cryptography Github told me it looked like a PyPy issue and best to open an issue here. 

Tested packages: Bcrypt, Cryptography
```
C:\Users\Michael>pip install cryptography
Collecting cryptography
  Using cached https://files.pythonhosted.org/packages/f3/39/d3904df7c56f8654691c4ae1bdb270c1c9220d6da79bd3b1fbad91afd0e1/cryptography-2.4.2.tar.gz
  Installing build dependencies ... error
  Complete output from command c:\users\michael\appdata\local\programs\python\pypy3\pypy3.exe -m pip install --ignore-installed --no-user --prefix C:\Users\Michael\AppData\Local\Temp\pip-build-env-jkco8raq --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools>=18.5 wheel "cffi>=1.7,!=1.11.3; python_implementation != 'PyPy'":
  RPython traceback:
    File "pypy_interpreter.c", line 42299, in BuiltinCode1_fastcall_1
    File "pypy_module_posix.c", line 4913, in get_terminal_size
  Traceback (most recent call last):
    File "c:\users\michael\appdata\local\programs\python\pypy3\lib-python\3\runpy.py", line 193, in _run_module_as_main
      "__main__", mod_spec)
    File "c:\users\michael\appdata\local\programs\python\pypy3\lib-python\3\runpy.py", line 85, in _run_code
      exec(code, run_globals)
    File "c:\users\michael\appdata\local\programs\python\pypy3\site-packages\pip\__main__.py", line 19, in <module>
      sys.exit(_main())
    File "c:\users\michael\appdata\local\programs\python\pypy3\site-packages\pip\_internal\__init__.py", line 64, in main
      cmd_name, cmd_args = parse_command(args)
    File "c:\users\michael\appdata\local\programs\python\pypy3\site-packages\pip\_internal\cli\main_parser.py", line 58, in parse_command
      parser = create_main_parser()
    File "c:\users\michael\appdata\local\programs\python\pypy3\site-packages\pip\_internal\cli\main_parser.py", line 28, in create_main_parser
      'formatter': UpdatingDefaultsHelpFormatter(),
    File "c:\users\michael\appdata\local\programs\python\pypy3\site-packages\pip\_internal\cli\parser.py", line 26, in __init__
      kwargs['width'] = get_terminal_size()[0] - 2
    File "c:\users\michael\appdata\local\programs\python\pypy3\site-packages\pip\_internal\utils\compat.py", line 217, in get_terminal_size
      return tuple(shutil.get_terminal_size())
    File "c:\users\michael\appdata\local\programs\python\pypy3\lib-python\3\shutil.py", line 1078, in get_terminal_size
      size = os.get_terminal_size(sys.__stdout__.fileno())
  SystemError: unexpected internal exception (please report a bug): <WindowsError object at 0x4899b20>; internal traceback was dumped to stderr

  ----------------------------------------
Command "c:\users\michael\appdata\local\programs\python\pypy3\pypy3.exe -m pip install --ignore-installed --no-user --prefix C:\Users\Michael\AppData\Local\Temp\pip-build-env-jkco8raq --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools>=18.5 wheel "cffi>=1.7,!=1.11.3; python_implementation != 'PyPy'"" failed with error code 1 in None
```