環境
- OS: macOS Big Sur
- Python : 3.8.7 (from Homebrew)
- pip : 20.2.3
- shell : zsh
発生した事象
pyproject.toml に次のような記述が含まれている状態で、 poetry install を行ったところ
[tool.poetry.dependencies]
python = "3.8.*"
pip = "^20.3.3"
gcsfs = "^0.7.1"
lightgbm = "^3.1.1"
pandas = "^1.2.0"
matplotlib = "^3.3.3"
seaborn = "^0.11.1"
% poetry install
Python 2.7 will no longer be supported in the next feature release of Poetry (1.2).
You should consider updating your Python version to a supported one.
Note that you will still be able to manage Python 2.7 projects by using the env command.
See https://python-poetry.org/docs/managing-environments/ for more information.
Installing dependencies from lock file
Package operations: 80 installs, 0 updates, 0 removals
• Installing lazy-object-proxy (1.4.3)
• Installing six (1.15.0)
• Installing wrapt (1.12.1)
• Installing certifi (2020.12.5)
• Installing astroid (2.4.1)
• Installing chardet (3.0.4)
• Installing idna (2.10)
• Installing isort (4.3.21)
• Installing mccabe (0.6.1)
• Installing pyasn1 (0.4.8)
• Installing pycodestyle (2.6.0)
• Installing pyflakes (2.2.0)
• Installing toml (0.10.2)
• Installing urllib3 (1.26.2)
• Installing cachetools (4.2.0)
• Installing flake8 (3.8.4)
• Installing multidict (5.1.0)
• Installing numpy (1.19.5): Failed
EnvCommandError
回避策
poetry を使わずに pip 20.3.3 を使うとインストールできる (python 3.9 を用いているものの、python 3.8 でも同様)
% python3.9 -m venv --upgrade-deps venv
Collecting pip
Downloading pip-20.3.3-py2.py3-none-any.whl (1.5 MB)
|████████████████████████████████| 1.5 MB 4.9 MB/s
Collecting setuptools
Using cached setuptools-51.1.1-py3-none-any.whl (2.0 MB)
Installing collected packages: pip, setuptools
Attempting uninstall: pip
Found existing installation: pip 20.2.3
Uninstalling pip-20.2.3:
Successfully uninstalled pip-20.2.3
Attempting uninstall: setuptools
Found existing installation: setuptools 49.2.1
Uninstalling setuptools-49.2.1:
Successfully uninstalled setuptools-49.2.1
Successfully installed pip-20.3.3 setuptools-51.1.1
% source venv/bin/activate
(venv) % pip install numpy
Collecting numpy
Downloading numpy-1.19.5-cp39-cp39-macosx_10_9_x86_64.whl (15.6 MB)
|████████████████████████████████| 15.6 MB 411 kB/s
Installing collected packages: numpy
Successfully installed numpy-1.19.5
ので、pip を使えば解決は一応できます。が、おすすめしません。poetry で requirements.txtを出力するようにすればまあなんとか…。
% poetry config virtualenvs.create false
% python3.8 -m venv .venv && source .venv/bin/activate && pip install -U pip && (poetry export --without-hashes > requirements.txt) && pip install -r requirements.txt && deactivate
このあと poetry install すると通りますし、poetry shell も通りますが、なんかコレジャナイ感がすごいです。よりよく解決したいですね。