pipenv fails to install jupyterlab

[whyboris]

Issue description

I run pipenv install jupyterlab
It correctly installs v0.34.11
Gives this error:

Could not find a version that matches prompt-toolkit<2.0.0,<2.1.0,==1.0.15,>=1.0.15,>=2.0.0

While the tree pipenv graph shows prompt-toolkit only in two lines:

jupyterlab==0.34.11
  - jupyterlab-launcher [required: >=0.13.1,<0.14.0, installed: 0.13.1]
...
    - notebook [required: >=4.2.0, installed: 5.7.0]
...
          - prompt-toolkit [required: >=2.0.0,<2.1.0, installed: 2.0.4]
...
  - notebook [required: >=4.3.1, installed: 5.7.0]
...
        - prompt-toolkit [required: >=2.0.0,<2.1.0, installed: 2.0.4]
...

Expected result

Install without the weird version error

Actual result

see above.

Steps to replicate

create a new directory with python_version = "3.6" and run pipenv install jupyterlab

---

$ pipenv --support

Pipenv version: '2018.7.1'

Pipenv location: '/usr/local/Cellar/pipenv/2018.7.1/libexec/lib/python3.7/site-packages/pipenv'

Python location: '/usr/local/Cellar/pipenv/2018.7.1/libexec/bin/python3.7'

Other Python installations in PATH:

• 2.7: /usr/local/bin/python2.7

• 2.7: /usr/local/bin/python2.7

• 2.7: /usr/bin/python2.7

• 3.6: /Users/byakubchik/.local/share/virtualenvs/ml-with-python-and-keras-u1_RmhqT/bin/python3.6m

• 3.6: /Users/byakubchik/.local/share/virtualenvs/ml-with-python-and-keras-u1_RmhqT/bin/python3.6

• 3.6: /Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6

• 3.6: /usr/local/bin/python3.6

• 3.7: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7m

• 3.7: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7

• 3.7: /usr/local/bin/python3.7

• 3.6.4: /Users/byakubchik/.local/share/virtualenvs/ml-with-python-and-keras-u1_RmhqT/bin/python

• 2.7.15: /usr/local/bin/python

• 2.7.10: /usr/bin/python

• 2.7.15: /usr/local/bin/python2

• 3.6.4: /Users/byakubchik/.local/share/virtualenvs/ml-with-python-and-keras-u1_RmhqT/bin/python3

• 3.7.0: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3

• 3.6.4: /Library/Frameworks/Python.framework/Versions/3.6/bin/python3

• 3.7.0: /usr/local/bin/python3

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.7.0',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '17.7.0',
 'platform_system': 'Darwin',
 'platform_version': 'Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT '
                     '2018; root:xnu-4570.71.2~1/RELEASE_X86_64',
 'python_full_version': '3.7.0',
 'python_version': '3.7',
 'sys_platform': 'darwin'}

System environment variables:

• PATH
• TERM_PROGRAM
• NVM_CD_FLAGS
• PIP_PYTHON_PATH
• SHELL
• TERM
• TMPDIR
• Apple_PubSub_Socket_Render
• TERM_PROGRAM_VERSION
• ZSH
• USER
• NVM_DIR
• SSH_AUTH_SOCK
• __CF_USER_TEXT_ENCODING
• VIRTUAL_ENV
• PAGER
• LSCOLORS
• PIPENV_ACTIVE
• _
• PWD
• LANG
• XPC_FLAGS
• PYTHONDONTWRITEBYTECODE
• XPC_SERVICE_NAME
• HOME
• SHLVL
• LOGNAME
• LESS
• LC_CTYPE
• NVM_BIN
• DISPLAY
• COLORTERM

Pipenv–specific environment variables:

• PIPENV_ACTIVE: 1

Debug–specific environment variables:

• PATH: /usr/local/Cellar/pipenv/2018.7.1/libexec/tools:/Users/byakubchik/.local/share/virtualenvs/ml-with-python-and-keras-u1_RmhqT/bin:/usr/local/opt/opencv3/bin:/usr/local/Cellar/pipenv/2018.7.1/libexec/tools:/usr/local/opt/opencv3/bin:/Users/byakubchik/.nvm/versions/node/v8.11.2/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:~/.composer/vendor/bin:/Library/TeX/texbin:/usr/local/go/bin:/opt/X11/bin
• SHELL: /bin/zsh
• LANG: en_US.UTF-8
• PWD: /Users/byakubchik/Desktop/myML/ml-with-python-and-keras
• VIRTUAL_ENV: /Users/byakubchik/.local/share/virtualenvs/ml-with-python-and-keras-u1_RmhqT

---

Contents of Pipfile ('/Users/byakubchik/Desktop/myML/ml-with-python-and-keras/Pipfile'):

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

[packages]
jupyterlab = "*"

[dev-packages]
black = "*"
pylint = "*"

[requires]
python_version = "3.6"

[pipenv]
allow_prereleases = true

[ociule]

I've also seen this on the latest pipenv master, unfortunately.

I have not undertaken the effort to find a minimal reproducing example so I have several occurences of prompt-toolkit.

λ pipenv graph | grep prompt
      - prompt-toolkit [required: >=1.0.15,<2.0.0, installed: 1.0.15]
    - prompt-toolkit [required: >=1.0.15,<2.0.0, installed: 1.0.15]
          - prompt-toolkit [required: >=1.0.15,<2.0.0, installed: 1.0.15]
      - prompt-toolkit [required: >=1.0.15,<2.0.0, installed: 1.0.15]
    - prompt-toolkit [required: >=1.0.15,<2.0.0, installed: 1.0.15]
  - prompt-toolkit [required: >=1.0.0,<2.0.0, installed: 1.0.15]
      - prompt-toolkit [required: >=1.0.15,<2.0.0, installed: 1.0.15]

This is after doing pip install --dev --skip-lock

@whyboris you can use pip install --skip-lock as a temporary solution.

[echo66]

I'm also experiencing the same issue. Skipping lock is a "solution" but not a good one if you want to be serious on how you manage your environment.

[Fongshway]

Same issue as well. Is it possible the issue is related to the recent release of ipython v7.0.0, which bumps the requirement to prompt_toolkit>=2.0.0,<2.1.0 from prompt_toolkit>=1.0.15,<2.0.0 in ipython v6.5.0? Unfortunately, I still wasn't able to resolve this by adding ipython = "==6.5.0" in my Pipfile.

[odoublewen]

Same issue for me. I guess it's impossible to be both <2.0.0 and >=2.0.0 at the same time, eh?

[kmsquire]

To clarify @odoublewen's comment, somewhere in the Jupyter ecosystem, there are conflicting requirements, where some packages require prompt_toolkit>=2.0.0 and some require prompt_toolkit<2.0.0.

The confusing thing for me is that pip install jupyter (or jupyterlab) works fine within pipenv's virtual environment.

Another, possibly cleaner workaround, is to remove jupyter / jupyterlab from your Pipfile and install manually with

pipenv shell
pip install jupyter # or jupyterlab

I have jupyter as dev dependency, so it's less important to me that pipenv manage it than most of my other packages. But I would love to see a solution to this.

[wpsamurai]

Same issue as well.

As a workaround you can install ipython==6.5.0 first and after that jupyter:

pipenv install ipython==6.5.0
pipenv install jupyter

[khpeek]

Incidentally, I get the same error trying to run pipenv install --dev ipdb. I worked around it by running pipenv install ipython==6.5.0 first as described above by wpsamurai.

[codingleo]

Installing ipython==6.5.0 first didn't work for me.
But by using --skip-lock worked fine.

I'm using python 3.7.0 and pip 18.0

[joewandy]

I can't even install jupyter now without having to use --skip-lock

Pipfile:

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

[packages]
numpy = "*"
pandas = "*"
scipy = "*"
ipython = "*"
matplotlib = "*"
jupyter = "*"

[dev-packages]

[requires]
python_version = "2.7"

$ pipenv install produces:

Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  You can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
Could not find a version that matches prompt-toolkit<2.0.0,<2.1.0,==1.0.15,>=1.0.0,>=1.0.4,>=2.0.0
Tried: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.25, 0.26, 0.28, 0.30, 0.31, 0.32, 0.32, 0.32, 0.33, 0.33, 0.33, 0.34, 0.34, 0.34, 0.35, 0.35, 0.35, 0.36, 0.36, 0.36, 0.37, 0.37, 0.37, 0.38, 0.38, 0.38, 0.39, 0.39, 0.39, 0.40, 0.40, 0.40, 0.41, 0.41, 0.41, 0.42, 0.42, 0.42, 0.43, 0.43, 0.43, 0.44, 0.44, 0.44, 0.45, 0.45, 0.45, 0.46, 0.46, 0.46, 0.47, 0.47, 0.47, 0.48, 0.48, 0.48, 0.49, 0.49, 0.49, 0.50, 0.50, 0.50, 0.51, 0.51, 0.51, 0.52, 0.52, 0.52, 0.53, 0.53, 0.53, 0.54, 0.54, 0.54, 0.55, 0.55, 0.55, 0.56, 0.56, 0.56, 0.57, 0.57, 0.57, 0.58, 0.58, 0.58, 0.59, 0.59, 0.59, 0.60, 0.60, 0.60, 1.0.0, 1.0.0, 1.0.0, 1.0.1, 1.0.1, 1.0.1, 1.0.2, 1.0.2, 1.0.2, 1.0.3, 1.0.3, 1.0.3, 1.0.4, 1.0.4, 1.0.4, 1.0.5, 1.0.5, 1.0.5, 1.0.6, 1.0.6, 1.0.6, 1.0.7, 1.0.7, 1.0.7, 1.0.8, 1.0.8, 1.0.8, 1.0.9, 1.0.9, 1.0.9, 1.0.10, 1.0.10, 1.0.10, 1.0.13, 1.0.13, 1.0.13, 1.0.14, 1.0.14, 1.0.14, 1.0.15, 1.0.15, 1.0.15, 2.0.1, 2.0.1, 2.0.1, 2.0.2, 2.0.2, 2.0.2, 2.0.3, 2.0.3, 2.0.3, 2.0.4, 2.0.4, 2.0.4, 2.0.5, 2.0.5, 2.0.5
There are incompatible versions in the resolved dependencies.

[mdgoldberg]

EDIT: this uses pipenv 2018.7.1

This issue seems to be related to #875, which does not seem to be completely solved (cc @vphilippon @nateprewitt @techalchemy ). I have a Pipfile with only jupyter with no constraint:

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

[packages]
jupyter = "*"

[dev-packages]

[requires]
python_version = "3.6"

When I run pipenv lock --verbose, I see that the best candidate for jupyter is 1.0.0, which only requires ipython>=5.0.0 and prompt-toolkit<2.0.0,>=1.0.0.

Then in round 2, it finds the best candidate for ipython to be 7.0.1 (the most recent version), which requires prompt-toolkit<2.1.0,>=2.0.0. At the end of round 2, there are the following lines:
adding ['ipython', '==7.0.1,>=4.0.0,>=5.0.0', '[]']
adding ['prompt-toolkit', '<2.0.0,<2.1.0,==1.0.15,>=1.0.0,>=2.0.0', '[]']

So it seems to be pinning the candidates and adding them as constraints, even though ipython==7.0.1 is not actually necessary for my Pipfile. Indeed, round 3 begins with the following current constraints:
ipython==7.0.1,>=4.0.0,>=5.0.0
prompt-toolkit<2.0.0,<2.1.0,==1.0.15,>=1.0.0,>=2.0.0 (1.0.15 was the best candidate found in round 2, and was subsequently pinned and added as a constraint).

So it really seems like #875 is not fixed, unless I am missing something. Is there a reason pipenv's dependency resolution shouldn't find that, say, ipython==5.8.0 would satisfy the jupyter constraint of >=5.0.0 as well as the prompt-toolkit requirement of <2.0.0,>=1.0.0 (ipython 5.8.0 requires >=1.0.4,<2.0.0).

[dragvs]

My configuration works just fine as a temporary workaround mentioned earlier by @wpsamurai. There is no need to use --skip-lock with it. In case of a problem you can further try pipenv lock --verbose and introduce results to the discussion.

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

[packages]
ipython = "<7.0.0"
jupyter = "*"

[dev-packages]

[requires]
python_version = "3.6"

Btw:

dragvs:~$ pipenv --version
pipenv, version 2018.7.1

[sansa33]

I suppose that the version of Python may cause the problem.
In a directory, I invoked the following commands, which worked fine.

$ pyenv local 3.6.6
$ pipenv install jupyterlab

However, in another directory, I invoked the following commands, which resulted in the prompt_toolkit problem.

$ pyenv local 3.7.0
$ pipenv install jupyterlab

[icp1994]

In a new clean venv pipenv install jupyterlab didn't produce any issue. In another messy venv I got rid of the issue with pipenv lock --clear