Pyenv support broken

Be sure to check the existing issues (both open and closed!), and make sure you are running the latest version of Pipenv.

$ pipenv --version
pipenv, version 2018.11.26

Probably related to #3136, however, I can’t reopen that.

Issue description

pipenv doesn’t find pyenv-python versions.

Expected result

When calling pipenv install pipenv should detect existing versions of Python installed by pyenv. If it doesn’t find a Python version as specified in the Pipfile it should start installing the correct Python version via pyenv and then use it to create the virtual environment.

Actual result / Steps to replicate

$ pyenv versions
* system (set by /Users/$USER/.pyenv/version)
  3.5.5
  3.6.5
  3.6.8
$ env|grep PY
PYENV_ROOT=/Users/$USER/.pyenv
$ pipenv --python 3.6
Warning: Python 3.6 was not found on your system…
Would you like us to install CPython 3.6.8 with pyenv? [Y/n]:
Installing CPython 3.6.8 with pyenv (this may take a few minutes)…
✔ Success!

Warning: The Python you just installed is not available on your PATH, apparently.

---

$ pipenv --support

Pipenv version: '2018.11.26'

Pipenv location: '/usr/local/Cellar/pipenv/2018.11.26_2/libexec/lib/python3.7/site-packages/pipenv'

Python location: '/usr/local/Cellar/pipenv/2018.11.26_2/libexec/bin/python3.7'

Python installations found:

• 3.7.2: /usr/local/bin/python3
• 3.7.2: /usr/local/bin/python3.7m
• 2.7.15: /usr/local/bin/python
• 2.7.15: /usr/local/bin/pythonw
• 2.7.10: /usr/bin/python
• 2.7.10: /usr/bin/pythonw
• 2.7.10: /usr/bin/python2.7

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.7.2',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '18.2.0',
 'platform_system': 'Darwin',
 'platform_version': 'Darwin Kernel Version 18.2.0: Thu Dec 20 20:46:53 PST '
                     '2018; root:xnu-4903.241.1~1/RELEASE_X86_64',
 'python_full_version': '3.7.2',
 'python_version': '3.7',
 'sys_platform': 'darwin'}

System environment variables:

• PATH
• TERM_PROGRAM
• DOTNET_CLI_TELEMETRY_OPTOUT
• PYENV_ROOT
• SHELL
• TERM
• HISTSIZE
• TMPDIR
• Apple_PubSub_Socket_Render
• TERM_PROGRAM_VERSION
• TERM_SESSION_ID
• LC_ALL
• OBJC_DISABLE_INITIALIZE_FORK_SAFETY
• USER
• HISTFILESIZE
• COMMAND_MODE
• SSH_AUTH_SOCK
• __CF_USER_TEXT_ENCODING
• _
• PWD
• LANG
• ITERM_PROFILE
• XPC_FLAGS
• ITERM_ORIG_PS1
• XPC_SERVICE_NAME
• HISTCONTROL
• COLORFGBG
• HOME
• SHLVL
• ITERM_PREV_PS1
• ITERM_SESSION_ID
• LOGNAME
• LC_CTYPE
• SECURITYSESSIONID
• COLORTERM
• PIP_DISABLE_PIP_VERSION_CHECK
• PYTHONDONTWRITEBYTECODE
• PIP_SHIMS_BASE_MODULE
• PIP_PYTHON_PATH
• PYTHONFINDER_IGNORE_UNSUPPORTED

Pipenv–specific environment variables:

Debug–specific environment variables:

• PATH: /usr/local/Cellar/pipenv/2018.11.26_2/libexec/tools:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/Wireshark.app/Contents/MacOS:/usr/local/share/dotnet:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/usr/local/sbin:/usr/local/opt/go/libexec/bin:/Users/$USER/go/bin:/Users/$USER/.gem/ruby/2.3.0/bin/
• SHELL: /bin/bash
• LANG: en_US.UTF-8
• PWD: /Users/$USER/dev/myproject

---

Contents of Pipfile (‘/Users/$USER/dev/myproject/Pipfile’):

[techalchemy]

this is resolved in master

you can fix it for now by running pip install -e git+https://github.com/pypa/pipenv.git@master#egg=pipenv

sorry for the frustration and thanks for your patience

[Nothing4You]

See #3742