Pipenv lock is failing due to pytest version errror

[kuwv]

Issue description

Unable to create or update lock files due to pytest version issue.

Expected result

Should install packages without version conflicts.

Actual result

pipenv.patched.notpip._internal.exceptions.UnsupportedPythonVersion: pytest requires Python '>=3.5' but the running Python is 2.7.5
File "/home/user/.local/lib/python2.7/site-packages/pipenv/resolver.py", line 126, in <module>
    main()
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/resolver.py", line 119, in main
    parsed.requirements_dir, parsed.packages)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/resolver.py", line 85, in _main
    requirements_dir=requirements_dir,
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/resolver.py", line 69, in resolve
    req_dir=requirements_dir
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/utils.py", line 726, in resolve_deps
    req_dir=req_dir,
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/utils.py", line 480, in actually_resolve_deps
    resolved_tree = resolver.resolve()
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/utils.py", line 385, in resolve
    results = self.resolver.resolve(max_rounds=environments.PIPENV_MAX_ROUNDS)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/piptools/resolver.py", line 102, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/piptools/resolver.py", line 206, in _resolve_one_round
    for dep in self._iter_dependencies(best_match):
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/piptools/resolver.py", line 301, in _iter_dependencies
    dependencies = self.repository.get_dependencies(ireq)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 234, in get_dependencies
    legacy_results = self.get_legacy_dependencies(ireq)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 426, in get_legacy_dependencies
    results, ireq = self.resolve_reqs(download_dir, ireq, wheel_cache)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 297, in resolve_reqs
    results = resolver._resolve_one(reqset, ireq)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/notpip/_internal/resolve.py", line 274, in _resolve_one
    self.requires_python = check_dist_requires_python(dist, absorb=False)
  File "/home/user/.local/lib/python2.7/site-packages/pipenv/patched/notpip/_internal/utils/packaging.py", line 62, in check_dist_requires_python
    '.'.join(map(str, sys.version_info[:3])),)
pipenv.patched.notpip._internal.exceptions.UnsupportedPythonVersion: pytest requires Python '>=3.5' but the running Python is 2.7.5

Steps to replicate

pip install --user pipenv pytest==4.6
pipenv shell
pipenv install

---

$ pipenv --support

Pipenv version: '2018.11.26'

Pipenv location: '/home/user/.local/lib/python2.7/site-packages/pipenv'

Python location: '/usr/bin/python2'

Python installations found:

• 2.7.5: /home/user/.local/share/virtualenvs/jido.inventory-Y-_EA1m9/bin/python2
• 2.7.5: /usr/bin/python

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '0',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '3.10.0-1062.4.1.el7.x86_64',
 'platform_system': 'Linux',
 'platform_version': '#1 SMP Wed Sep 25 09:42:57 EDT 2019',
 'python_full_version': '2.7.5',
 'python_version': '2.7',
 'sys_platform': 'linux2'}

System environment variables:

• GILT_REPO
• PYTHONDONTWRITEBYTECODE
• LESSOPEN
• SSH_CLIENT
• SELINUX_USE_CURRENT_RANGE
• LOGNAME
• USER
• HOME
• PATH
• PS1
• LANG
• TERM
• SHELL
• SHLVL
• HISTSIZE
• MANPATH
• PYTHONFINDER_IGNORE_UNSUPPORTED
• PIPENV_ACTIVE
• XDG_RUNTIME_DIR
• SSH_AUTH_SOCK
• VIRTUAL_ENV
• SELINUX_ROLE_REQUESTED
• PIP_PYTHON_PATH
• XDG_SESSION_ID
• _
• SSH_CONNECTION
• SSH_TTY
• HOSTNAME
• SELINUX_LEVEL_REQUESTED
• HISTCONTROL
• PWD
• PIP_SHIMS_BASE_MODULE
• PIP_DISABLE_PIP_VERSION_CHECK
• MAIL
• LS_COLORS

Pipenv–specific environment variables:

• PIPENV_ACTIVE: 1

Debug–specific environment variables:

• PATH: /home/user/.local/share/virtualenvs/org.inventory-Y-_EA1m9/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/opt/puppetlabs/bin:/home/user/.local/bin:/home/user/bin
• SHELL: /bin/bash
• LANG: en_US.UTF-8
• PWD: /home/user/org.inventory
• VIRTUAL_ENV: /home/user/.local/share/virtualenvs/org.inventory-Y-_EA1m9

---

Contents of Pipfile ('/home/user/org.inventory/Pipfile'):

[[source]]
name = "jido"
url = "https://nexus.example.com/repository/pypi-simple-release/simple"
verify_ssl = true

[dev-packages]
python-vagrant = "*"
molecule = "*"
docker = "*"
invoke = "*"
jinja2 = "*"

[packages]
ansible = "~=2.8"
nailgun = "*"
apypie = "*"
#pywinrm = ">=0.3.0"

[requires]
python_version = "2.7"

[imomaliev]

Your pipenv installed in python 2.7. Use

[requires]
python_version = "3.5"

[kuwv]

RHEL 7 is python2.7 based and installing another python is not a solution but I guess this is going nowhere.

[imomaliev]

@kuwv You could use newer versions of python in your virtual environments. So this shouldn't be an issue