Wheel command does not work if the directory contains a socket

[hackaugusto]

I'm using blackbox to manage my secrets, it changes the gpg homedir to $GIT_REPO/keyrings/live forcing the gpg-agent to create a socket named $GIT_REPO/keyrings/live/S.gpg-agent, since my setup.py is side-by-side with the keyrings pip wheel . fails:

Exception:
Traceback (most recent call last):
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/basecommand.py", line 223, in main
    status = self.run(options, args)
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/commands/wheel.py", line 194, in run
    if not wb.build():
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/wheel.py", line 706, in build
    self.requirement_set.prepare_files(self.finder)
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/req/req_set.py", line 334, in prepare_files
    functools.partial(self._prepare_file, finder))
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/req/req_set.py", line 321, in _walk_req_to_install
    more_reqs = handler(req_to_install)
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/req/req_set.py", line 491, in _prepare_file
    session=self.session)
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/download.py", line 814, in unpack_url
    unpack_file_url(link, location, download_dir)
  File "/home/hack/work/envs/oca-2.7/lib/python2.7/site-packages/pip/download.py", line 699, in unpack_file_url
    shutil.copytree(link_path, location, symlinks=True)
  File "/usr/lib64/python2.7/shutil.py", line 208, in copytree
    raise Error, errors
Error: [('/home/hack/work/projects/oca/keyrings/live/S.gpg-agent', '/tmp/pip-UfkYbS-build/keyrings/live/S.gpg-agent', "[Errno 6] No such device or address: '/home/hack/work/projects/oca/keyrings/live/S.gpg-agent'")]

As a work around I'm doing a first copy myself and removing the keyrings directory.

Note: $GIT_REPO is not the .git but the folder that cotains it.

[oz123]

I can confirm this bug. Here is my setup:

I am trying to install my package from a directory where there is a subdirectory conf containing the uwsgi socket.

$ ls
MANIFEST.in  Makefile  build  conf  dist  docs  fabfile.py  fixtures  manage.py  requirements.txt   setup.py  share_analytics.egg-info  sharescreening  static  test_requirements.txt

These works fine:

python setup.py install
pip install -e .

Issuing pip install . first tries to copy the current directory before reading setup.py and checking for setup(packages=...).
When it does this it calls shutil.copytree which can't handle sockets.

$ python
Python 2.7.9 (default, Mar  1 2015, 12:57:24) 
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import shutil
>>> shutil.copytree('conf', 'bla')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/shutil.py", line 208, in copytree
    raise Error, errors
shutil.Error: [('conf/sharescreening.sock', 'bla/sharescreening.sock', "[Errno 6] No such device or address: 'conf/sharescreening.sock'")]
>>> 

That is obvious that sockets can't be copied, so maybe pip should know about this? Ofcourse there is a work around here. But I think the issue here is that pip is bluntly using shutil.copytree.

[pradyunsg]

Closing as a duplicate of #2195. I'm not 100% sure here but reopening is a cheap operation. :)