easy_install from Python 3.7 (Win64) cannot install modules

[P403n1x87]

BPO	34030
Nosy	@ned-deily, @P403n1x87

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2018-07-03.13:43:43.913>
created_at = <Date 2018-07-03.10:51:05.891>
labels = ['type-bug', '3.7']
title = 'easy_install from Python 3.7 (Win64) cannot install modules'
updated_at = <Date 2018-07-03.13:43:43.904>
user = 'https://github.com/P403n1x87'

bugs.python.org fields:

activity = <Date 2018-07-03.13:43:43.904>
actor = 'ned.deily'
assignee = 'none'
closed = True
closed_date = <Date 2018-07-03.13:43:43.913>
closer = 'ned.deily'
components = ['Demos and Tools']
creation = <Date 2018-07-03.10:51:05.891>
creator = 'Gabriele Tornetta'
dependencies = []
files = []
hgrepos = []
issue_num = 34030
keywords = []
message_count = 2.0
messages = ['320957', '320983']
nosy_count = 2.0
nosy_names = ['ned.deily', 'Gabriele Tornetta']
pr_nums = []
priority = 'normal'
resolution = 'third party'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue34030'
versions = ['Python 3.7']

[P403n1x87]

When trying to install a module (pycrypto in this case), easy_install fails with the following error (run via Git Bash)

$ easy_install pycrypto-2.6.win-amd64-py3.3.exe
Processing pycrypto-2.6.win-amd64-py3.3.exe
error: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\<uid>\\AppData\\Local\\Temp\\easy_install-z4dfyyqo\\pycrypto-2.6-py3.7-win32.egg.tmp\\Crypto\\Cipher\\__pycache__\\AES.cpython-33.pyc'

The version of easy_install that ships with Python 3.6 works as expected.

[ned-deily]

easy_install is part of the setuptools project and issues with it are handled here:

https://github.com/pypa/setuptools/issues
https://pypi.org/project/setuptools/