pipenv install tooks almost 1 hour because of pipenv lock process

[rnglab]

Hello everyone,

First of all thanks for this great project.

I'm trying to use pipenv for one of our projects. After environment setup i just start to install our dependency packages with :

 pipenv install 

But the experience is here really unexpected, it tooks almost 1 hour.

Also when process complete the console says it just takes 4 seconds :

I guess this message is not related about whole process. There must be another items such as indexing, caching or something else.

I think these step needs some improvements in console behaviors.

• It could be nice if console output gives correct information about whole process and its current steps.
• It could be nice if install process takes less time.

Basic Pipfile for just 3 packages:

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

[dev-packages]

[packages]
numpy = "*"
imutils = "*"
opencv-python = "*"

[requires]
python_version = "3.7"

[frostming]

It is a known issue, which happens when installing packages like numpy, scipy and tensorflow.

See related issues #3827 #2681

[rnglab]

@frostming thanks 👍