Requirements installation works with pip, but not with pipenv

Moving one of project to Pipenv, I’ve noticed that pipenv is having problems parsing the requirements when creating the Pipfile.

Looks like one of the packages defines gevent<1.1 while we have gevent==1.2.2 inside local.txt. Not sure why pip manages to overcome this.

Info

Pipenv version

$ pipenv --version
pipenv, version 7.4.8

Error message

$ pipenv install -r requirements/local.txt
Creating a virtualenv for this project…
⠋Using base prefix '/home/mischi/.local/bin/anaconda3'
New python executable in /home/mischi/.local/bin/anaconda3/envs/django-clock-tDLsdMgK/bin/python
Installing setuptools, pip, wheel...done.

Virtualenv location: /home/mischi/.virtualenvs/django-clock-tDLsdMgK
Creating a Pipfile for this project…
Requirements file provided! Importing into Pipfile…
No package provided, installing all dependencies.
Pipfile.lock not found, creating…
Locking [dev-packages] dependencies…
Locking [packages] dependencies…
Traceback (most recent call last):
  File "/home/mischi/.local/bin/anaconda3/bin/pipenv", line 11, in <module>
    sys.exit(cli())
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/cli.py", line 1595, in install
    do_init(dev=dev, allow_global=system, ignore_pipfile=ignore_pipfile, system=system, skip_lock=skip_lock, verbose=verbose, concurrent=concurrent)
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/cli.py", line 1191, in do_init
    do_lock(system=system)
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/cli.py", line 1025, in do_lock
    project=project
  File "/home/mischi/.local/bin/anaconda3/lib/python3.6/site-packages/pipenv/utils.py", line 448, in resolve_deps
    resolved_tree = resolver.resolve()
  File "/home/mischi/.local/lib/python3.6/site-packages/piptools/resolver.py", line 107, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/home/mischi/.local/lib/python3.6/site-packages/piptools/resolver.py", line 187, in _resolve_one_round
    best_matches = set(self.get_best_match(ireq) for ireq in constraints)
  File "/home/mischi/.local/lib/python3.6/site-packages/piptools/resolver.py", line 187, in <genexpr>
    best_matches = set(self.get_best_match(ireq) for ireq in constraints)
  File "/home/mischi/.local/lib/python3.6/site-packages/piptools/resolver.py", line 245, in get_best_match
    best_match = self.repository.find_best_match(ireq, prereleases=self.prereleases)
  File "/home/mischi/.local/lib/python3.6/site-packages/piptools/repositories/pypi.py", line 116, in find_best_match
    raise NoCandidateFound(ireq, all_candidates)
piptools.exceptions.NoCandidateFound: Could not find a version that matches gevent<1.1,==1.2.2
Tried: 0.9.2, 0.9.3, 0.10.0, 0.11.0, 0.11.1, 0.11.2, 0.12.0, 0.12.1, 0.12.2, 0.13.0, 0.13.1, 0.13.2, 0.13.3, 0.13.4, 0.13.5, 0.13.6, 0.13.7, 0.13.8, 1.0, 1.0.1, 1.0.2, 1.1a1, 1.1a2, 1.1b1, 1.1b2, 1.1b3, 1.1b4, 1.1b5, 1.1b6, 1.1rc1, 1.1rc2, 1.1rc3, 1.1rc4, 1.1rc5, 1.1.0, 1.1.1, 1.1.2, 1.2a1, 1.2a2, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2

What works

$ pipenv --two
$ pipenv shell
$ pip install -r local.txt

What does not work

$ pipenv install -r local.txt

Requirement files

local.txt

# Local development dependencies go here
-r base.txt
coverage==4.4.1
django-coverage-plugin==1.5.0
Sphinx==1.6.3
django-extensions==1.9.1
Werkzeug==0.12.2
django-test-plus==1.0.18
factory-boy==2.9.2

# django-debug-toolbar that works with Django 1.5+
django-debug-toolbar==1.8

# improved REPL
ipython==5.5.0 # pyup: >=5.3.0,<6.0.0
ipdb==0.10.3

# pytest!
pytest-django==3.1.2
pytest-sugar==0.9.0

gevent==1.2.2

# Enables better email testing
maildump==0.5.4

base.txt

# Bleeding edge Django
django==1.11.5

# Configuration
django-environ==0.4.4
whitenoise==3.3.0

# Forms
django-braces==1.11.0
django-crispy-forms==1.6.1

# Models
django-model-utils==3.0.0

# Images
Pillow==4.2.1

# For user registration, either via email or social
# Well-built with regular release cycles!
django-allauth==0.33.0

# Python-PostgreSQL Database Adapter
psycopg2==2.7.3.1

# Unicode slugification
awesome-slugify==1.6.5

# Time zones support
pytz==2017.2

# Your custom requirements go here
django-bootstrap-breadcrumbs==0.8.2
django-bootstrap3==9.0.0
#django-bootstrap3-datetimepicker-2==2.4.2
git+git://github.com/blag/django-bootstrap3-datetimepicker.git@f8a78b231b75c331c143d5461456f663827a8af6#egg=django-bootstrap3-datetimepicker

reportlab==3.4.0
lxml==4.0.0
django-recaptcha==1.3.1
django-taggit==0.22.1

[uranusjr]

maildump==0.5.4 asks for gevent<1.1, and you provide gevent==1.2.2 yourself. Given maildump says 1.1 and later won’t work your setup is likely to break in the future. You might want to look for alternatives asap. 😃

[mimischi]

Thanks for the investigation @uranusjr! I’m not using maildump anymore, so I might as well get rid of the package!