ctypes fails to find ncurses via ncursesw on Arch Linux

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2016-08-30.18:16:32.627>
labels = ['ctypes', 'type-bug']
title = 'ctypes fails to find ncurses via ncursesw on Arch Linux'
updated_at = <Date 2016-08-31.08:26:48.366>
user = 'https://github.com/blueyed'

bugs.python.org fields:

activity = <Date 2016-08-31.08:26:48.366>
actor = 'SilentGhost'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['ctypes']
creation = <Date 2016-08-30.18:16:32.627>
creator = 'blueyed'
dependencies = []
files = []
hgrepos = []
issue_num = 27900
keywords = []
message_count = 1.0
messages = ['273947']
nosy_count = 4.0
nosy_names = ['amaury.forgeotdarc', 'belopolsky', 'blueyed', 'meador.inge']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue27900'
versions = ['Python 3.5']