Arch Linux

Description:

ipython2 requires a hard dependency to python2-ptyprocess. If not present it raises the following error message:

Traceback (most recent call last):
File "/usr/bin/ipython2", line 4, in <module>
from IPython import start_ipython
File "/usr/lib/python2.7/site-packages/IPython/__init__.py", line 47, in <module>
from .core.application import Application
File "/usr/lib/python2.7/site-packages/IPython/core/application.py", line 24, in <module>
from IPython.core import release, crashhandler
File "/usr/lib/python2.7/site-packages/IPython/core/crashhandler.py", line 28, in <module>
from IPython.core import ultratb
File "/usr/lib/python2.7/site-packages/IPython/core/ultratb.py", line 116, in <module>
from IPython.utils import path as util_path
File "/usr/lib/python2.7/site-packages/IPython/utils/path.py", line 19, in <module>
from IPython.utils.process import system
File "/usr/lib/python2.7/site-packages/IPython/utils/process.py", line 19, in <module>
from ._process_posix import system, getoutput, arg_split, check_pid
File "/usr/lib/python2.7/site-packages/IPython/utils/_process_posix.py", line 24, in <module>
import pexpect
File "/usr/lib/python2.7/site-packages/pexpect/__init__.py", line 75, in <module>
from .pty_spawn import spawn, spawnu
File "/usr/lib/python2.7/site-packages/pexpect/pty_spawn.py", line 11, in <module>
import ptyprocess
ImportError: No module named ptyprocess


Additional info:
* package version(s) 4.0.0
* config and/or log files etc.


Steps to reproduce:

just open the ipython2 shell