Arch Linux

Description:

I get this traceback when calling a program that depends on `python-aiohttp`:
```
Traceback (most recent call last):
File "/usr/bin/stig", line 6, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3147, in <module>
@_call_aside
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3131, in _call_aside
f(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3160, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 666, in _build_master
ws.require(__requires__)
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 984, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 870, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'idna-ssl>=1.0.0' distribution was not found and is required by aiohttp
```

Installing python-idna_ssl solves this issue.

I believe that according to this line: https://github.com/aio-libs/aiohttp/blob/2.3/setup.py#L69 `idna-ssl` is a must requirement for `aiohttp` - does it prove my point?

Additional info:
* package version(s): 2.3.10-1