IPykernel breaking pipenv virtual env on python 3.7.2

Reproduce el fallo de Windows usando los comandos de pipenv del issue con Python 3.7.2 y, después, inspecciona el punto de entrada site-packages\win32\lib\pywin32_bootstrap.py del traceback. Se considera terminado cuando instalar ipykernel ya no rompe el entorno virtual y python se inicia correctamente después.

Steps to reproduce:

1. Create new pipenv environment:
   pipenv shell
2. Install ipykernel
   pipenv install ipykernel
3. Installation throws error: AttributeError: module 'site' has no attribute 'getsitepackages'
4. python.exe now doesn't work. Throws the same error:
   `> python

Fatal Python error: initsite: Failed to import the site module

Traceback (most recent call last):
File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 791, in
main()
File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 768, in main
paths_in_sys = addsitepackages(paths_in_sys)
File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 280, in addsitepackages
addsitedir(sitedir, known_paths)
File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 211, in addsitedir
addpackage(sitedir, name, known_paths)
File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 179, in addpackage
exec(line)
File "", line 1, in
File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site-packages\win32\lib\pywin32_bootstrap.py", line 14, in
for maybe in site.getsitepackages():
AttributeError: module 'site' has no attribute 'getsitepackages'`

ERROR ON CREATING NEW ENVIRONMENT:
`
Successfully created virtual environment!

Virtualenv location: C:\Users-.virtualenvs\test-gBjW7Fpf

Installing ipykernel…

Adding ipykernel to Pipfile's [packages]…

Installation Succeeded

Pipfile.lock not found, creating…

Locking [dev-packages] dependencies…

Locking [packages] dependencies…

Locking Failed!

Fatal Python error: initsite: Failed to import the site module

Traceback (most recent call last):

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 791, in

main()

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 768, in main

paths_in_sys = addsitepackages(paths_in_sys)

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 280, in addsitepackages

addsitedir(sitedir, known_paths)

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 211, in addsitedir

addpackage(sitedir, name, known_paths)

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 179, in addpackage

exec(line)

File "", line 1, in

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site-packages\win32\lib\pywin32_bootstrap.py", line 14, in

for maybe in site.getsitepackages():

AttributeError: module 'site' has no attribute 'getsitepackages'

Traceback (most recent call last):

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 791, in

main()

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 768, in main

paths_in_sys = addsitepackages(paths_in_sys)

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 280, in addsitepackages

addsitedir(sitedir, known_paths)

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 211, in addsitedir

addpackage(sitedir, name, known_paths)

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site.py", line 179, in addpackage

exec(line)

File "", line 1, in

File "C:\Users-.virtualenvs\test-gBjW7Fpf\lib\site-packages\win32\lib\pywin32_bootstrap.py", line
14, in

for maybe in site.getsitepackages():

AttributeError: module 'site' has no attribute 'getsitepackages'
`