Install error when installing a non-package in package-mode gives invalid instructions

[andyclegg]

Description

Create an empty project with poetry init, then attempt to install it. Without the README.md file being created, the installation will fail. When installation fails without configuring package-mode, Poetry 1.8.1 emits the following error message:

Warning: The current project could not be installed: [Errno 2] No such file or directory: '/README.md'
If you do not want to install the current project use --no-root.
If you want to use Poetry only for dependency management but not for packaging, you can set the operating mode to "non-package" in your pyproject.toml file.
In a future version of Poetry this warning will become an error!

The message instructs to 'set the operating mode to "non-package" in your pyproject.toml file', implying using 'non-package = true' or similar, whereas the correct key is 'package-mode = false'.

Workarounds

The correct key can be inferred from a search.

Poetry Installation Method

pipx

Operating System

Linux Mint 21.3

Poetry Version

1.8.1

Poetry Configuration

cache-dir = "/home/andy/.cache/pypoetry"
experimental.system-git-client = false
installer.max-workers = null
installer.modern-installation = true
installer.no-binary = null
installer.parallel = true
keyring.enabled = true
solver.lazy-wheel = true
virtualenvs.create = true
virtualenvs.in-project = null
virtualenvs.options.always-copy = false
virtualenvs.options.no-pip = false
virtualenvs.options.no-setuptools = false
virtualenvs.options.system-site-packages = false
virtualenvs.path = "{cache-dir}/virtualenvs"  # /home/andy/.cache/pypoetry/virtualenvs
virtualenvs.prefer-active-python = false
virtualenvs.prompt = "{project_name}-py{python_version}"
warnings.export = true

Python Sysconfig

No response

Example pyproject.toml

[tool.poetry]
name = "foo"
version = "0.1.0"
description = ""
authors = ["Andy"]
readme = "README.md"

[tool.poetry.dependencies]
python = "^3.9"


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

Poetry Runtime Logs

$ poetry -vvv install
Loading configuration file /home/andy/.config/pypoetry/config.toml
Using virtualenv: /home/andy/.cache/pypoetry/virtualenvs/foo-IVQOPcWJ-py3.9
Installing dependencies from lock file

Finding the necessary packages for the current system

Installing the current project: foo (0.1.0)

Warning: The current project could not be installed: [Errno 2] No such file or directory: '/home/andy/foo/README.md'
If you do not want to install the current project use --no-root.
If you want to use Poetry only for dependency management but not for packaging, you can set the operating mode to "non-package" in your pyproject.toml file.
In a future version of Poetry this warning will become an error!

[github-actions]

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