pipenv update --dry-run bug

[ratson]

Maybe related to #1073

pipenv update --dry-run is not working.

Describe your environment

1. OS Type
   macOS 10.13

2. Python version: $ python -V
   Python 3.6.3

3. Pipenv version: $ pipenv --version
   pipenv, version 9.0.1

Expected result

Report which packages to be updated.

Actual result

Courtesy Notice: Pipenv found itself running within a virtual environment, so it will automatically use that environment, instead of creating its own for any project.
Checking dependencies…
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.
Could not find a version that matches entrypoints>=0.2.2
Tried: (no version found at all)
Please check your version specifier and version number. See PEP440 for more information.
All good!

Steps to replicate

pipenv install notebook
pipenv update --dry-run

[techalchemy]

Can confirm. Locking works fine, but updating does not.

[dschaller]

Just gave this a try and couldn't reproduce.

> pip list --format=legacy| grep notebook
notebook (5.0.0)
> pipenv update --dry-run
Courtesy Notice: Pipenv found itself running within a virtual environment, so it will automatically use that environment, instead of creating its own for any project.
Checking dependencies…
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.
Could not find a version that matches entrypoints>=0.2.2
Tried: (no version found at all)
Please check your version specifier and version number. See PEP440 for more information.
notebook==5.4.0 is available (5.0.0 installed)!

[asherf]

I think I am hitting a very similar issue:

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.
Could not find a version that matches django<2.1,==2.0.2,>=1.11
Tried: 1.1.3, 1.1.3, 1.1.4, 1.1.4, 1.2, 1.2, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 1.2.7, 1.2.7, 1.3, 1.3, 1.3.1, 1.3.1, 1.3.2, 1.3.2, 1.3.3, 1.3.3, 1.3.4, 1.3.4, 1.3.5, 1.3.5, 1.3.6, 1.3.6, 1.3.7, 1.3.7, 1.4, 1.4, 1.4.1, 1.4.1, 1.4.2, 1.4.2, 1.4.3, 1.4.3, 1.4.4, 1.4.4, 1.4.5, 1.4.5, 1.4.6, 1.4.6, 1.4.7, 1.4.7, 1.4.8, 1.4.8, 1.4.9, 1.4.9, 1.4.10, 1.4.10, 1.4.11, 1.4.11, 1.4.12, 1.4.12, 1.4.13, 1.4.13, 1.4.14, 1.4.14, 1.4.15, 1.4.15, 1.4.16, 1.4.16, 1.4.17, 1.4.17, 1.4.18, 1.4.18, 1.4.19, 1.4.19, 1.4.20, 1.4.20, 1.4.21, 1.4.21, 1.4.22, 1.4.22, 1.5, 1.5, 1.5.1, 1.5.1, 1.5.2, 1.5.2, 1.5.2, 1.5.2, 1.5.3, 1.5.3, 1.5.4, 1.5.4, 1.5.5, 1.5.5, 1.5.6, 1.5.6, 1.5.7, 1.5.7, 1.5.8, 1.5.8, 1.5.8, 1.5.8, 1.5.9, 1.5.9, 1.5.10, 1.5.10, 1.5.11, 1.5.11, 1.5.12, 1.5.12, 1.5.12, 1.5.12, 1.6, 1.6, 1.6, 1.6, 1.6.1, 1.6.1, 1.6.1, 1.6.1, 1.6.2, 1.6.2, 1.6.2, 1.6.2, 1.6.3, 1.6.3, 1.6.3, 1.6.3, 1.6.4, 1.6.4, 1.6.4, 1.6.4, 1.6.5, 1.6.5, 1.6.5, 1.6.5, 1.6.6, 1.6.6, 1.6.6, 1.6.6, 1.6.7, 1.6.7, 1.6.7, 1.6.7, 1.6.8, 1.6.8, 1.6.8, 1.6.8, 1.6.9, 1.6.9, 1.6.9, 1.6.9, 1.6.10, 1.6.10, 1.6.10, 1.6.10, 1.6.11, 1.6.11, 1.6.11, 1.6.11, 1.7, 1.7, 1.7, 1.7, 1.7.1, 1.7.1, 1.7.1, 1.7.1, 1.7.2, 1.7.2, 1.7.2, 1.7.2, 1.7.3, 1.7.3, 1.7.3, 1.7.3, 1.7.4, 1.7.4, 1.7.4, 1.7.4, 1.7.5, 1.7.5, 1.7.5, 1.7.5, 1.7.6, 1.7.6, 1.7.6, 1.7.6, 1.7.7, 1.7.7, 1.7.7, 1.7.7, 1.7.8, 1.7.8, 1.7.8, 1.7.8, 1.7.9, 1.7.9, 1.7.9, 1.7.9, 1.7.10, 1.7.10, 1.7.10, 1.7.10, 1.7.11, 1.7.11, 1.7.11, 1.7.11, 1.8a1, 1.8a1, 1.8b1, 1.8b1, 1.8b2, 1.8b2, 1.8rc1, 1.8rc1, 1.8, 1.8, 1.8, 1.8, 1.8.1, 1.8.1, 1.8.1, 1.8.1, 1.8.2, 1.8.2, 1.8.2, 1.8.2, 1.8.3, 1.8.3, 1.8.3, 1.8.3, 1.8.4, 1.8.4, 1.8.4, 1.8.4, 1.8.5, 1.8.5, 1.8.5, 1.8.5, 1.8.6, 1.8.6, 1.8.6, 1.8.6, 1.8.7, 1.8.7, 1.8.7, 1.8.7, 1.8.8, 1.8.8, 1.8.8, 1.8.8, 1.8.9, 1.8.9, 1.8.9, 1.8.9, 1.8.10, 1.8.10, 1.8.10, 1.8.10, 1.8.11, 1.8.11, 1.8.11, 1.8.11, 1.8.12, 1.8.12, 1.8.12, 1.8.12, 1.8.13, 1.8.13, 1.8.13, 1.8.13, 1.8.14, 1.8.14, 1.8.14, 1.8.14, 1.8.15, 1.8.15, 1.8.15, 1.8.15, 1.8.16, 1.8.16, 1.8.16, 1.8.16, 1.8.17, 1.8.17, 1.8.17, 1.8.17, 1.8.18, 1.8.18, 1.8.18, 1.8.18, 1.9a1, 1.9a1, 1.9b1, 1.9b1, 1.9rc1, 1.9rc1, 1.9rc2, 1.9rc2, 1.9, 1.9, 1.9, 1.9, 1.9.1, 1.9.1, 1.9.1, 1.9.1, 1.9.2, 1.9.2, 1.9.2, 1.9.2, 1.9.3, 1.9.3, 1.9.3, 1.9.3, 1.9.4, 1.9.4, 1.9.4, 1.9.4, 1.9.5, 1.9.5, 1.9.5, 1.9.5, 1.9.6, 1.9.6, 1.9.6, 1.9.6, 1.9.7, 1.9.7, 1.9.7, 1.9.7, 1.9.8, 1.9.8, 1.9.8, 1.9.8, 1.9.9, 1.9.9, 1.9.9, 1.9.9, 1.9.10, 1.9.10, 1.9.10, 1.9.10, 1.9.11, 1.9.11, 1.9.11, 1.9.11, 1.9.12, 1.9.12, 1.9.12, 1.9.12, 1.9.13, 1.9.13, 1.9.13, 1.9.13, 1.10a1, 1.10a1, 1.10a1, 1.10a1, 1.10b1, 1.10b1, 1.10b1, 1.10b1, 1.10rc1, 1.10rc1, 1.10rc1, 1.10rc1, 1.10, 1.10, 1.10, 1.10, 1.10.1, 1.10.1, 1.10.1, 1.10.1, 1.10.2, 1.10.2, 1.10.2, 1.10.2, 1.10.3, 1.10.3, 1.10.3, 1.10.3, 1.10.4, 1.10.4, 1.10.4, 1.10.4, 1.10.5, 1.10.5, 1.10.5, 1.10.5, 1.10.6, 1.10.6, 1.10.6, 1.10.6, 1.10.7, 1.10.7, 1.10.7, 1.10.7, 1.10.8, 1.10.8, 1.10.8, 1.10.8, 1.11a1, 1.11a1, 1.11b1, 1.11b1, 1.11rc1, 1.11rc1, 1.11rc1, 1.11rc1, 1.11, 1.11, 1.11, 1.11, 1.11.1, 1.11.1, 1.11.1, 1.11.1, 1.11.2, 1.11.2, 1.11.2, 1.11.2, 1.11.3, 1.11.3, 1.11.3, 1.11.3, 1.11.4, 1.11.4, 1.11.4, 1.11.4, 1.11.5, 1.11.5, 1.11.5, 1.11.5, 1.11.6, 1.11.6, 1.11.6, 1.11.6, 1.11.7, 1.11.7, 1.11.7, 1.11.7, 1.11.8, 1.11.8, 1.11.8, 1.11.8, 1.11.9, 1.11.9, 1.11.9, 1.11.9, 1.11.10, 1.11.10, 1.11.10, 1.11.10

(this is on ubuntu 16.04)
so the virtualenv is a python 3.5 virtualenv. however, pipenv was installed under python 2.7 (globally on the machine /usr/local/bin/pipenv) so when it runs it runs under python 2.7
when it calls to get a list of Django version it doesn't get Django 2.x which is python 3 only.

[techalchemy]

@asherf you have a dependency resolution issue. If you install pipenv with python 2, it will never be able to resolve python 3 dependencies properly (currently). Your issue is not related to this one, but is related to #857. For now, please run:

$ pip uninstall pipenv
$ pip3 install pipenv

Or install pipenv with the --user flag rather than at the system level (which is not a recommended practice) and add ~/.local/bin to your path