pipenv fails to install matplotlib

Attempting to install matplotlib using pipenv erroneously pulls in subprocess32. Installing directly with pip under a virtualenv works correctly. My python setup is a described by jacobian (ie, pyenv->pipsi->pipenv). This is on Raspbian GNU/Linux 9.4 (stretch), an ARM platform.

$ python -m pipenv.help output

Pipenv version: '11.9.0'

Pipenv location: '/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv'

Python location: '/home/pi/.local/venvs/pipenv/bin/python'

Other Python installations in PATH:

• 2.7: /usr/bin/python2.7

• 2.7: /usr/bin/python2.7

• 3.5: /usr/bin/python3.5m

• 3.5: /usr/bin/python3.5

• 3.6: /home/pi/.pyenv/shims/python3.6m

• 3.6: /home/pi/.pyenv/shims/python3.6

• 3.6.4: /home/pi/.pyenv/shims/python

• 2.7.13: /usr/bin/python

• 2.7.13: /usr/bin/python2

• 3.6.4: /home/pi/.pyenv/shims/python3

• 3.5.3: /usr/bin/python3

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.6.4',
 'os_name': 'posix',
 'platform_machine': 'armv7l',
 'platform_python_implementation': 'CPython',
 'platform_release': '4.9.80-v7+',
 'platform_system': 'Linux',
 'platform_version': '#1098 SMP Fri Mar 9 19:11:42 GMT 2018',
 'python_full_version': '3.6.4',
 'python_version': '3.6',
 'sys_platform': 'linux'}

System environment variables:

• LS_COLORS
• SSH_CONNECTION
• LANG
• OLDPWD
• INFINALITY_FT_CHROMEOS_STYLE_SHARPENING_STRENGTH
• INFINALITY_FT_AUTOHINT_INCREASE_GLYPH_HEIGHTS
• INFINALITY_FT_CONTRAST
• PYENV_VIRTUALENV_INIT
• INFINALITY_FT_STEM_FITTING_STRENGTH
• INFINALITY_FT_GLOBAL_EMBOLDEN_X_VALUE
• XDG_SESSION_ID
• USER
• INFINALITY_FT_AUTOHINT_SNAP_STEM_HEIGHT
• INFINALITY_FT_GRAYSCALE_FILTER_STRENGTH
• INFINALITY_FT_GAMMA_CORRECTION
• PWD
• HOME
• TEXTDOMAIN
• SSH_CLIENT
• TMUX
• INFINALITY_FT_WINDOWS_STYLE_SHARPENING_STRENGTH
• SSH_TTY
• INFINALITY_FT_BRIGHTNESS
• MAIL
• TERM
• SHELL
• INFINALITY_FT_USE_VARIOUS_TWEAKS
• TMUX_PANE
• PYENV_SHELL
• SHLVL
• INFINALITY_FT_BOLD_EMBOLDEN_Y_VALUE
• INFINALITY_FT_GLOBAL_EMBOLDEN_Y_VALUE
• INFINALITY_FT_AUTOHINT_HORIZONTAL_STEM_DARKEN_STRENGTH
• LOGNAME
• DBUS_SESSION_BUS_ADDRESS
• XDG_RUNTIME_DIR
• PATH
• INFINALITY_FT_FILTER_PARAMS
• INFINALITY_FT_USE_KNOWN_SETTINGS_ON_SELECTED_FONTS
• INFINALITY_FT_STEM_SNAPPING_SLIDING_SCALE
• INFINALITY_FT_STEM_ALIGNMENT_STRENGTH
• INFINALITY_FT_BOLD_EMBOLDEN_X_VALUE
• INFINALITY_FT_AUTOHINT_VERTICAL_STEM_DARKEN_STRENGTH
• INFINALITY_FT_FRINGE_FILTER_STRENGTH
• _
• PYTHONDONTWRITEBYTECODE
• PIP_PYTHON_PATH
• PYTHONUNBUFFERED

Pipenv–specific environment variables:

Debug–specific environment variables:

• PATH: /home/pi/.pyenv/plugins/pyenv-virtualenv/shims:/home/pi/.pyenv/shims:/home/pi/.pyenv/bin:/home/pi/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
• SHELL: /bin/bash
• LANG: en_GB.UTF-8
• PWD: /home/pi

---

Contents of Pipfile (‘/home/pi/Pipfile’):

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

[packages]

[dev-packages]

[requires]
python_version = "3.6"

---

Expected result

Matplotlib successfully installed

Actual result

Matplotlib install fails b/c it’s trying to pull in subprocess32, which is not needed by Python3.6. Full log attached. pipenv-matplotlib.log

pi@raspberrypi:~/tmp$ pipenv install matplotlib -v 2>&1 |tee pipenv-matplotlib.log
Creating a virtualenv for this project…
Using /home/pi/.pyenv/versions/3.6.4/bin/python3.6m (3.6.4) to create virtualenv…
Running virtualenv with interpreter /home/pi/.pyenv/versions/3.6.4/bin/python3.6m
Using base prefix '/home/pi/.pyenv/versions/3.6.4'
New python executable in /home/pi/.local/share/virtualenvs/pi-V9tpwFal/bin/python3.6m
Also creating executable in /home/pi/.local/share/virtualenvs/pi-V9tpwFal/bin/python
Installing setuptools, pip, wheel...done.

Virtualenv location: /home/pi/.local/share/virtualenvs/pi-V9tpwFal
Installing matplotlib…

...

INFO:notpip.req.req_set:Collecting subprocess32==3.2.7
INFO:pip9.download:File was already downloaded /home/pi/.cache/pipenv/pkgs/subprocess32-3.2.7.tar.gz
INFO:pip9.utils:Complete output from command python setup.py egg_info:
INFO:pip9.utils:This backport is for Python 2.x only.

----------------------------------------
Traceback (most recent call last):
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/resolver.py", line 82, in <module>
    main()
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/resolver.py", line 71, in main
    clear=do_clear,
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/resolver.py", line 63, in resolve
    verbose=verbose,
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/utils.py", line 425, in resolve_deps
    pre,
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/utils.py", line 336, in actually_resolve_reps
    resolved_tree.update(resolver.resolve(max_rounds=PIPENV_MAX_ROUNDS))
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 102, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 200, in _resolve_one_round
    for dep in self._iter_dependencies(best_match):
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 297, in _iter_dependencies
    dependencies = self.repository.get_dependencies(ireq)
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 174, in get_dependencies
    legacy_results = self.get_legacy_dependencies(ireq)
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-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 "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/patched/notpip/req/req_set.py", line 644, in _prepare_file
    abstract_dist.prep_for_dist()
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/patched/notpip/req/req_set.py", line 134, in prep_for_dist
    self.req_to_install.run_egg_info()
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/vendor/pip9/req/req_install.py", line 439, in run_egg_info
    command_desc='python setup.py egg_info')
  File "/home/pi/.local/venvs/pipenv/lib/python3.6/site-packages/pipenv/vendor/pip9/utils/__init__.py", line 707, in call_subprocess
    % (command_desc, proc.returncode, cwd))
pip9.exceptions.InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/tmp4e0pkookbuild/subprocess32/

Steps to replicate

run pipenv install matplotlib

[wearpants]

@techalchemy: this is still occurring with a pipenv installed from master. Logs attached. pipenv-master.txt pipenv-matplotlib-2.log

[uranusjr]

Something is very wrong with, like, many things. The resolver clearly thinks your virtualenv runs Python 2. It even tries to download the cp27 (CPyhton 2.7) wheel. How about… deleting the virtualenv (pipenv --rm) and start from scratch?