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Cannot "poetry add matplotlib", possible bug in dependency resolution #580

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Cannot "poetry add matplotlib", possible bug in dependency resolution#580
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area/solverRelated to the dependency resolverkind/featureFeature requests/implementations
@mbello

Description

@mbello
mbello
opened on Oct 30, 2018
  • I am on the latest Poetry version.
  • I have searched the issues of this repo and believe that this is not a duplicate.
  • If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).
  • OS version and name: Ubuntu 18.04
  • Poetry version: 0.12.4
  • Contents of your pyproject.toml file:
    [tool.poetry]
    name = "test"
    version = "0.1.0"
    description = ""
    authors = ["mbello [email protected]"]

[tool.poetry.dependencies]
python = "*"

[tool.poetry.dev-dependencies]
pytest = "^3.0"

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

Issue

Matplotlib requires python >=3.5
I am on python 3.6.6 and poetry does not allow me to install matplotlib.
The command poetry run pip install matplotlib did work as a workaround.

Steps to reproduce

$ rm -Rf test
$ poetry new test
Created package test in test
$ cd test
$ poetry --version
Poetry 0.12.4
$ python --version
Python 3.6.6
$ poetry run python --version
Creating virtualenv test-py3.6 in /home/mbello/PycharmProjects/test/.venv
Python 3.6.6
$ poetry -vvv add matplotlib
Using virtualenv: /home/mbello/PycharmProjects/test/.venv
PyPI: No release information found for matplotlib-0.63.0, skipping
PyPI: No release information found for matplotlib-0.64, skipping
PyPI: No release information found for matplotlib-0.65, skipping
PyPI: No release information found for matplotlib-0.70, skipping
PyPI: No release information found for matplotlib-0.71, skipping
PyPI: No release information found for matplotlib-0.83.2, skipping
PyPI: No release information found for matplotlib-0.85, skipping
PyPI: No release information found for matplotlib-0.87.1, skipping
PyPI: No release information found for matplotlib-0.87.2, skipping
PyPI: No release information found for matplotlib-0.87.3, skipping
PyPI: No release information found for matplotlib-0.87.4, skipping
PyPI: No release information found for matplotlib-0.87.5, skipping
PyPI: No release information found for matplotlib-0.87.6, skipping
PyPI: No release information found for matplotlib-0.87.7, skipping
PyPI: No release information found for matplotlib-0.90.0, skipping
PyPI: No release information found for matplotlib-0.90.1, skipping
PyPI: No release information found for matplotlib-0.91.2, skipping
PyPI: No release information found for matplotlib-0.91.3, skipping
PyPI: No release information found for matplotlib-0.91.4, skipping
PyPI: No release information found for matplotlib-0.98.0, skipping
PyPI: No release information found for matplotlib-0.98.1, skipping
PyPI: No release information found for matplotlib-0.98.3, skipping
PyPI: No release information found for matplotlib-0.98.5.1, skipping
PyPI: No release information found for matplotlib-0.98.5.3, skipping
PyPI: No release information found for matplotlib-0.99.0, skipping
PyPI: No release information found for matplotlib-0.99.1, skipping
PyPI: No release information found for matplotlib-0.99.3, skipping
PyPI: No release information found for matplotlib-1.0.0, skipping
PyPI: 41 packages found for matplotlib *
Using version ^3.0 for matplotlib

Updating dependencies
Resolving dependencies...
1: fact: test is 0.1.0
1: derived: test
1: fact: test depends on matplotlib (^3.0)
1: fact: test depends on pytest (^3.0)
1: selecting test (0.1.0)
1: derived: pytest (^3.0)
1: derived: matplotlib (^3.0)
PyPI: 42 packages found for pytest >=3.0,<4.0
PyPI: No release information found for matplotlib-0.63.0, skipping
PyPI: No release information found for matplotlib-0.64, skipping
PyPI: No release information found for matplotlib-0.65, skipping
PyPI: No release information found for matplotlib-0.70, skipping
PyPI: No release information found for matplotlib-0.71, skipping
PyPI: No release information found for matplotlib-0.83.2, skipping
PyPI: No release information found for matplotlib-0.85, skipping
PyPI: No release information found for matplotlib-0.87.1, skipping
PyPI: No release information found for matplotlib-0.87.2, skipping
PyPI: No release information found for matplotlib-0.87.3, skipping
PyPI: No release information found for matplotlib-0.87.4, skipping
PyPI: No release information found for matplotlib-0.87.5, skipping
PyPI: No release information found for matplotlib-0.87.6, skipping
PyPI: No release information found for matplotlib-0.87.7, skipping
PyPI: No release information found for matplotlib-0.90.0, skipping
PyPI: No release information found for matplotlib-0.90.1, skipping
PyPI: No release information found for matplotlib-0.91.2, skipping
PyPI: No release information found for matplotlib-0.91.3, skipping
PyPI: No release information found for matplotlib-0.91.4, skipping
PyPI: No release information found for matplotlib-0.98.0, skipping
PyPI: No release information found for matplotlib-0.98.1, skipping
PyPI: No release information found for matplotlib-0.98.3, skipping
PyPI: No release information found for matplotlib-0.98.5.1, skipping
PyPI: No release information found for matplotlib-0.98.5.3, skipping
PyPI: No release information found for matplotlib-0.99.0, skipping
PyPI: No release information found for matplotlib-0.99.1, skipping
PyPI: No release information found for matplotlib-0.99.3, skipping
PyPI: No release information found for matplotlib-1.0.0, skipping
PyPI: 2 packages found for matplotlib >=3.0,<4.0
1: fact: matplotlib (3.0.1) requires Python >=3.5
1: derived: not matplotlib (3.0.1)
1: fact: matplotlib (3.0.0) requires Python >=3.5
1: derived: not matplotlib (3.0.0)
1: fact: no versions of matplotlib match >3.0,<3.0.1 || >3.0.1,<4.0
1: conflict: no versions of matplotlib match >3.0,<3.0.1 || >3.0.1,<4.0
1: ! matplotlib (>3.0,<3.0.1 || >3.0.1,<4.0) is partially satisfied by not matplotlib (3.0.0)
1: ! which is caused by "matplotlib (3.0.0) requires Python >=3.5"
1: ! thus: matplotlib is forbidden
1: ! matplotlib (>=3.0,<3.0.1 || >3.0.1,<4.0) is partially satisfied by not matplotlib (3.0.1)
1: ! which is caused by "matplotlib (3.0.1) requires Python >=3.5"
1: ! thus: matplotlib is forbidden
1: ! matplotlib (>=3.0,<4.0) is satisfied by matplotlib (^3.0)
1: ! which is caused by "test depends on matplotlib (^3.0)"
1: ! thus: version solving failed
1: Version solving took 0.247 seconds.
1: Tried 1 solutions.

[SolverProblemError]
The current supported Python versions are *
Because no versions of matplotlib match >3.0,<3.0.1 || >3.0.1,<4.0
and matplotlib (3.0.0) requires Python >=3.5, matplotlib is forbidden.
So, because matplotlib (3.0.1) requires Python >=3.5
and test depends on matplotlib (^3.0), version solving failed.

Exception trace:
/home/mbello/.poetry/lib/poetry/vendor/py3.6/cleo/application.py in run() at line 94
status_code = self.do_run(input, output_)
/home/mbello/.poetry/lib/poetry/console/application.py in do_run() at line 88
return super(Application, self).do_run(i, o)
/home/mbello/.poetry/lib/poetry/vendor/py3.6/cleo/application.py in do_run() at line 197
status_code = command.run(input, output_)
/home/mbello/.poetry/lib/poetry/console/commands/command.py in run() at line 77
return super(BaseCommand, self).run(i, o)
/home/mbello/.poetry/lib/poetry/vendor/py3.6/cleo/commands/base_command.py in run() at line 146
status_code = self.execute(input, output_)
/home/mbello/.poetry/lib/poetry/_vendor/py3.6/cleo/commands/command.py in execute() at line 107
return self.handle()
/home/mbello/.poetry/lib/poetry/console/commands/add.py in handle() at line 139
status = installer.run()
/home/mbello/.poetry/lib/poetry/installation/installer.py in run() at line 76
self._do_install(local_repo)
/home/mbello/.poetry/lib/poetry/installation/installer.py in _do_install() at line 158
ops = solver.solve(use_latest=self._whitelist)
/home/mbello/.poetry/lib/poetry/puzzle/solver.py in solve() at line 37
packages, depths = self._solve(use_latest=use_latest)
/home/mbello/.poetry/lib/poetry/puzzle/solver.py in _solve() at line 154
raise SolverProblemError(e)

add [-D|--dev] [--git GIT] [--path PATH] [-E|--extras EXTRAS] [--optional] [--python PYTHON] [--platform PLATFORM] [--allow-prereleases] [--dry-run] [--] ()...

$ poetry run pip install matplotlib
Collecting matplotlib
Using cached https://files.pythonhosted.org/packages/1e/f8/4aba1144dad8c67db060049d1a8bc740ad9fa35288d21b82bb85de69ff15/matplotlib-3.0.1-cp36-cp36m-manylinux1_x86_64.whl
Collecting python-dateutil>=2.1 (from matplotlib)
Using cached https://files.pythonhosted.org/packages/74/68/d87d9b36af36f44254a8d512cbfc48369103a3b9e474be9bdfe536abfc45/python_dateutil-2.7.5-py2.py3-none-any.whl
Collecting cycler>=0.10 (from matplotlib)
Using cached https://files.pythonhosted.org/packages/f7/d2/e07d3ebb2bd7af696440ce7e754c59dd546ffe1bbe732c8ab68b9c834e61/cycler-0.10.0-py2.py3-none-any.whl
Collecting pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 (from matplotlib)
Using cached https://files.pythonhosted.org/packages/2b/4a/f06b45ab9690d4c37641ec776f7ad691974f4cf6943a73267475b05cbfca/pyparsing-2.2.2-py2.py3-none-any.whl
Collecting kiwisolver>=1.0.1 (from matplotlib)
Using cached https://files.pythonhosted.org/packages/69/a7/88719d132b18300b4369fbffa741841cfd36d1e637e1990f27929945b538/kiwisolver-1.0.1-cp36-cp36m-manylinux1_x86_64.whl
Collecting numpy>=1.10.0 (from matplotlib)
Using cached https://files.pythonhosted.org/packages/16/21/2e88568c134cc3c8d22af290865e2abbd86efa58a1358ffcb19b6c74f9a3/numpy-1.15.3-cp36-cp36m-manylinux1_x86_64.whl
Collecting six>=1.5 (from python-dateutil>=2.1->matplotlib)
Using cached https://files.pythonhosted.org/packages/67/4b/141a581104b1f6397bfa78ac9d43d8ad29a7ca43ea90a2d863fe3056e86a/six-1.11.0-py2.py3-none-any.whl
Requirement already satisfied: setuptools in ./.venv/lib/python3.6/site-packages (from kiwisolver>=1.0.1->matplotlib)
Installing collected packages: six, python-dateutil, cycler, pyparsing, kiwisolver, numpy, matplotlib
Successfully installed cycler-0.10.0 kiwisolver-1.0.1 matplotlib-3.0.1 numpy-1.15.3 pyparsing-2.2.2 python-dateutil-2.7.5 six-1.11.0

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