pipenv graph fails with ModuleNotFoundError

[orn688]

Issue description

pipenv graph fails with the following output:

File "/usr/local/lib/python3.7/dist-packages/pipenv/vendor/pipdeptree.py", line 16, in <module>
    from pipenv.vendor.pip_shims import get_installed_distributions, FrozenRequirement
ModuleNotFoundError: No module named 'pipenv'

Expected result

Some dependency graph to be shown.

Actual result

(see above)

Steps to replicate

In the official Pipenv Docker image (docker run -it --rm kennethreitz/pipenv /bin/bash):

pipenv --python 3.7
pipenv graph  # fails

---

$ pipenv --support

Pipenv version: '2018.10.9'

Pipenv location: '/usr/local/lib/python3.7/dist-packages/pipenv'

Python location: '/usr/bin/python3.7'

Python installations found:

• 3.7.0: /usr/bin/python3
• 3.7.0: /usr/bin/python3.7
• 3.7.0: /usr/bin/python3.7m
• 3.6.6: /usr/bin/python3.6m
• 3.6.6: /usr/bin/python3.6
• 2.7.15rc1: /usr/bin/python2.7

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.7.0',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '4.9.93-linuxkit-aufs',
 'platform_system': 'Linux',
 'platform_version': '#1 SMP Wed Jun 6 16:55:56 UTC 2018',
 'python_full_version': '3.7.0',
 'python_version': '3.7',
 'sys_platform': 'linux'}

System environment variables:

• LC_ALL
• LS_COLORS
• LESSCLOSE
• LANG
• HOSTNAME
• PWD
• HOME
• DEBIAN_FRONTEND
• TERM
• SHLVL
• PATH
• LESSOPEN
• _
• PYTHONDONTWRITEBYTECODE
• PIP_SHIMS_BASE_MODULE
• PIP_PYTHON_PATH

Pipenv–specific environment variables:

Debug–specific environment variables:

• PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
• LANG: C.UTF-8
• PWD: /app

---

Contents of Pipfile ('/app/Pipfile'):

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]

[dev-packages]

[requires]
python_version = "3.7"

[techalchemy]

Please see #2952 and #2970 for discussion

[orn688]

Oops, thanks! Sorry for the dupe.