pipenv -e fails to install local package. pip -e works.

Be sure to check the existing issues, both open and closed.

Describe the issue briefly here.

Describe your environment

1. OS Type: Ubuntu Artful 17.10
2. Python version: Python 3.6.3
3. Pipenv version: pipenv, version 8.3.1

Expected result

Expected local package to be installed similar to pip.

Actual result

$ pipenv install -e /home/marc/opencompliance/opencompliance/scrapers/libsanctions --verbose

Installing -e /home/marc/opencompliance/opencompliance/scrapers/libsanctions…
⠋Installing '-e /home/marc/opencompliance/opencompliance/scrapers/libsanctions'
$ "/home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/bin/pip" install --verbose -e "/home/marc/opencompliance/opencompliance/scrapers/libsanctions" -i https://pypi.python.org/simple --exists-action w
Traceback (most recent call last):
File "/home/marc/.local/bin/pipenv", line 11, in
sys.exit(cli())
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 722, in __call__
return self.main(args, *kwargs)
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, *ctx.params)
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 535, in invoke
return callback(args, **kwargs)
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/cli.py", line 1869, in install
converted = convert_deps_from_pip(package_name)
File "/home/marc/.local/lib/python3.6/site-packages/pipenv/utils.py", line 540, in convert_deps_from_pip
os.path.isfile(req.name)) and not req.vcs:
File "/usr/lib/python3.6/genericpath.py", line 30, in isfile
st = os.stat(path)
TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType

Steps to replicate

use pipenv -e to install local package with setup.py file. this is the package i'm trying to install.
https://github.com/marc-fez/libsanctions.git

pip -e works with this package.

$ pip install -e /home/marc/opencompliance/opencompliance/scrapers/libsanctions --verbose
Obtaining file:///home/marc/opencompliance/opencompliance/scrapers/libsanctions
Running setup.py (path:/home/marc/opencompliance/opencompliance/scrapers/libsanctions/setup.py) egg_info for package from file:///home/marc/opencompliance/opencompliance/scrapers/libsanctions
Running command python setup.py egg_info
running egg_info
writing libsanctions.egg-info/PKG-INFO
writing dependency_links to libsanctions.egg-info/dependency_links.txt
writing namespace_packages to libsanctions.egg-info/namespace_packages.txt
writing requirements to libsanctions.egg-info/requires.txt
writing top-level names to libsanctions.egg-info/top_level.txt
reading manifest file 'libsanctions.egg-info/SOURCES.txt'
writing manifest file 'libsanctions.egg-info/SOURCES.txt'
Source in /home/marc/opencompliance/opencompliance/scrapers/libsanctions has version 0.1.0, which satisfies requirement libsanctions==0.1.0 from file:///home/marc/opencompliance/opencompliance/scrapers/libsanctions
Requirement already satisfied: normality>=0.4.2 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: fingerprints>=0.4.0 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: countrynames in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: jsonschema>=2.6.0 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: sqlalchemy>=1.1.0 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: requests>=2.13 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: morphium in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: dalet in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: lxml in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: xlrd in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: six in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from libsanctions==0.1.0)
Requirement already satisfied: chardet in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from normality>=0.4.2->libsanctions==0.1.0)
Requirement already satisfied: banal in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from normality>=0.4.2->libsanctions==0.1.0)
Requirement already satisfied: unidecode in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from fingerprints>=0.4.0->libsanctions==0.1.0)
Requirement already satisfied: pyyaml in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from fingerprints>=0.4.0->libsanctions==0.1.0)
Requirement already satisfied: pycountry in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from countrynames->libsanctions==0.1.0)
Requirement already satisfied: python-Levenshtein in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from countrynames->libsanctions==0.1.0)
Requirement already satisfied: urllib3<1.23,>=1.21.1 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from requests>=2.13->libsanctions==0.1.0)
Requirement already satisfied: idna<2.7,>=2.5 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from requests>=2.13->libsanctions==0.1.0)
Requirement already satisfied: certifi>=2017.4.17 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from requests>=2.13->libsanctions==0.1.0)
Requirement already satisfied: boto3 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from morphium->libsanctions==0.1.0)
Requirement already satisfied: babel>=2.5.1 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from dalet->libsanctions==0.1.0)
Requirement already satisfied: parsedatetime>=2.1 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from dalet->libsanctions==0.1.0)
Requirement already satisfied: urltools>=0.3.2 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from dalet->libsanctions==0.1.0)
Requirement already satisfied: phonenumbers>=8.8.4 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from dalet->libsanctions==0.1.0)
Requirement already satisfied: setuptools in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from python-Levenshtein->countrynames->libsanctions==0.1.0)
Requirement already satisfied: botocore<1.8.0,>=1.7.0 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from boto3->morphium->libsanctions==0.1.0)
Requirement already satisfied: s3transfer<0.2.0,>=0.1.10 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from boto3->morphium->libsanctions==0.1.0)
Requirement already satisfied: jmespath<1.0.0,>=0.7.1 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from boto3->morphium->libsanctions==0.1.0)
Requirement already satisfied: pytz>=0a in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from babel>=2.5.1->dalet->libsanctions==0.1.0)
Requirement already satisfied: future in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from parsedatetime>=2.1->dalet->libsanctions==0.1.0)
Requirement already satisfied: docutils>=0.10 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from botocore<1.8.0,>=1.7.0->boto3->morphium->libsanctions==0.1.0)
Requirement already satisfied: python-dateutil<3.0.0,>=2.1 in /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages (from botocore<1.8.0,>=1.7.0->boto3->morphium->libsanctions==0.1.0)
Installing collected packages: libsanctions
Running setup.py develop for libsanctions
Running command /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/bin/python3 -c "import setuptools, tokenize;__file__='/home/marc/opencompliance/opencompliance/scrapers/libsanctions/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" develop --no-deps
running develop
running egg_info
writing libsanctions.egg-info/PKG-INFO
writing dependency_links to libsanctions.egg-info/dependency_links.txt
writing namespace_packages to libsanctions.egg-info/namespace_packages.txt
writing requirements to libsanctions.egg-info/requires.txt
writing top-level names to libsanctions.egg-info/top_level.txt
reading manifest file 'libsanctions.egg-info/SOURCES.txt'
writing manifest file 'libsanctions.egg-info/SOURCES.txt'
running build_ext
Creating /home/marc/.local/share/virtualenvs/libsanctions-VUOiacvt/lib/python3.6/site-packages/libsanctions.egg-link (link to .)
Adding libsanctions 0.1.0 to easy-install.pth file

Installed /home/marc/opencompliance/opencompliance/scrapers/libsanctions

Successfully installed libsanctions
Cleaning up...