Make "poetry check" also check the scripts

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• I have searched the documentation and believe that my question is not covered.

Feature Request

Please check the scripts section

When I added the following pyproject.toml to my toy project mpu:

[tool.poetry]
name = "mpu"
version = "0.1.0"
description = ""
authors = ["Martin Thoma <info@martin-thoma.de>"]
license = "MIT"

[tool.poetry.dependencies]
python = "^3.8"
awscli = "^1.18.172"
pydantic = "^1.7.2"
click = "^7.1.2"
numpy = "^1.19.4"
scipy = "^1.5.4"
pandas = "^1.1.4"
typing-extensions = "^3.7.4"

[tool.poetry.dev-dependencies]

[tool.poetry.scripts]
poetry = "mpu.cli:entry_point"

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

Please note that mpu.cli does not exist, but I still get:

poetry install       
Creating virtualenv mpus-d5ZJE7ws-py3.8 in /home/moose/.cache/pypoetry/virtualenvs
Installing dependencies from lock file

Package operations: 19 installs, 0 updates, 0 removals

  • Installing six (1.15.0)
  • Installing jmespath (0.10.0)
  • Installing python-dateutil (2.8.1)
  • Installing urllib3 (1.25.11)
  • Installing botocore (1.19.12)
  • Installing pyasn1 (0.4.8)
  • Installing colorama (0.4.3)
  • Installing docutils (0.15.2)
  • Installing numpy (1.19.4)
  • Installing pytz (2020.4)
  • Installing pyyaml (5.3.1)
  • Installing rsa (4.5)
  • Installing s3transfer (0.3.3)
  • Installing awscli (1.18.172)
  • Installing click (7.1.2)
  • Installing pandas (1.1.4)
  • Installing pydantic (1.7.2)
  • Installing scipy (1.5.4)
  • Installing typing-extensions (3.7.4.3)

This looks as if everything is fine, but when I try to run it, I get:

$ poetry run mpu

  FileNotFoundError

  [Errno 2] No such file or directory

  at ~/.pyenv/versions/3.8.5/lib/python3.8/os.py:601 in _execvpe
       597│         path_list = map(fsencode, path_list)
       598│     for dir in path_list:
       599│         fullname = path.join(dir, file)
       600│         try:
    →  601│             exec_func(fullname, *argrest)
       602│         except (FileNotFoundError, NotADirectoryError) as e:
       603│             last_exc = e
       604│         except OSError as e:
       605│             last_exc = e

Same for poetry check:

poetry check
All set!

Start with the implementation of the poetry check command and the script configuration shown in the issue. Reproduce the example with the missing mpu.cli target, then verify that poetry check reports the invalid script instead of saying “All set!”.