python: AT14 failed to install numpy package in a virtual environment

[maxiwell]

I created a venv with AT14.0 to test Tensorlfow but I am getting the error below when I run pip to install numpy package. AT15.0 doesn't reproduce this bug and numpy is installed properly.

To reproduce:

/opt/at14.0/bin/python3 -m venv ~/.venv/at14-env
source ~/.venv/at14-env/bin/activate
pip3 install --upgrade pip
pip3 install --prefer-binary numpy

Error message:

pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last):
  File "/home/maxiwell/.venv/at14-env/lib64/python3.8/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 89, in _build_backend
    obj = import_module(mod_path)
  File "/opt/at14.0/lib64/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'setuptools'

[tuliom]

The warning message at the beginning might be related to this:

  WARNING: Value for prefixed-purelib does not match. Please report this to <https://github.com/pypa/pip/issues/10151>
  distutils: /tmp/pip-build-env-_x_wnusw/normal/lib/python3.8/site-packages
  sysconfig: /tmp/pip-build-env-_x_wnusw/normal/lib64/python3.8/site-packages