Problem installing with Pipenv

[alistair-gemmell]

Expected behaviour

Should be able to install opencv-python (or opencv-contrib-python) into a pipenv

Actual behaviour

When I get to install opencv-python, I get an error. opencv-python actually installs fine, and can be imported, but creating a Pipfile.lock now fails, and whenever I install further packages I get the same error warning messages. (If I previously has a Pipfile.lock, it is deleted by this installation attempt.) Pip, pipenv and python are all up-to-date. If I uninstall opencv-python, then everything starts working again.

Steps to reproduce

• Working on Ubuntu 20.04 LTS

$ python --version
Python 3.8.10
$ pip --version
pip 21.2.4 from /home/SI/username/.local/lib/python3.8/site-packages/pip (python 3.8)
$ pipenv --version
pipenv, version 11.9.0
$ pipenv install opencv-python
Installing opencv-python…
Looking in indexes: https://pypi.python.org/simple
Collecting opencv-python
  Using cached opencv_python-4.5.3.56-cp38-cp38-manylinux2014_x86_64.whl (49.9 MB)
Requirement already satisfied: numpy>=1.17.3 in /home/SI/username/.local/share/virtualenvs/AI_RPC_Server-xYYUp_ir/lib/python3.8/site-packages (from opencv-python) (1.21.2)
Installing collected packages: opencv-python
Successfully installed opencv-python-4.5.3.56

Adding opencv-python to Pipfile's [packages]…
Pipfile.lock (e0f10d) out of date, updating to (96dce2)…
Locking [dev-packages] dependencies…
Locking [packages] dependencies…
elf.repository.get_dependencies(ireq)
  File "/usr/lib/python3/dist-packages/pipenv/patched/piptools/repositories/pypi.py", line 174, in get_dependencies
    legacy_results = self.get_legacy_dependencies(ireq)
  File "/usr/lib/python3/dist-packages/pipenv/patched/piptools/repositories/pypi.py", line 222, in get_legacy_dependencies
    result = reqset._prepare_file(self.finder, ireq, ignore_requires_python=True)
  File "/usr/lib/python3/dist-packages/pipenv/patched/notpip/req/req_set.py", line 644, in _prepare_file
    abstract_dist.prep_for_dist()
  File "/usr/lib/python3/dist-packages/pipenv/patched/notpip/req/req_set.py", line 134, in prep_for_dist
    self.req_to_install.run_egg_info()
  File "/usr/lib/python3/dist-packages/pipenv/vendor/pip9/req/req_install.py", line 435, in run_egg_info
    call_subprocess(
  File "/usr/lib/python3/dist-packages/pipenv/vendor/pip9/utils/__init__.py", line 705, in call_subprocess
    raise InstallationError(
pip9.exceptions.InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/tmpft9ek_lhbuild/opencv-python/

[directrix1]

I have this exact issue.

[directrix1]

After upgrading to newest pipenv, it appears to work for me.

[alistair-gemmell]

$ pip install pipenv
Requirement already satisfied: pipenv in /usr/lib/python3/dist-packages (11.9.0)

This may be a stupid question, but aren't I already on the newest version?

[skvark]

$ pip install pipenv
Requirement already satisfied: pipenv in /usr/lib/python3/dist-packages (11.9.0)

This may be a stupid question, but aren't I already on the newest version?

No, you're not. 11.9.0 was released on March 21, 2018. https://pypi.org/project/pipenv

[alistair-gemmell]

Thank you - turns out I had installed using sudo apt install pipenv which is hilariously out-of-date. I uninstalled that, then installed a newer version using pipenv install --user pipenv and updating my $PATH. (Replying to complete the history of my fix for posterity!)

[RomanSteinberg]

@skvark I have the same problem and a bit more.

According to this, here is the latest version for today. Pip says I have it. But I still have the same problem. What should I do?

@alistair-gemmell Also I'd like to mention that command

pipenv install --user pipenv

you suggested is incorrect. Probably, you mean pip3 install --user pipenv. But it says everything is ok for me.

[RomanSteinberg]

The problem is resolved. I actually had two versions of pipenv. One was installed by apt (/usr/bin/pipenv) and other by pip (/home/this_user/.local/pipenv). It was hard to determine which of them is used and which is up-to-date. Removing the first one, solved the issue for me.