Hello, I am trying to set poetry's pyproject.toml file as my python resolve for pants. pants.toml:

[source]
marker_filenames = ["pyproject.toml"]

[python]
interpreter_constraints = ["==3.11.*"]
enable_resolves = true
default_resolve = "poetry"

[python.resolves]
poetry = "pyproject.toml"

pyproject.toml

[project]
name = "abc"
version = "0.1.0"
description = ""
authors = []
readme = "README.md"
requires-python = ">=3.11"

When I run

pants check ::

I get the error

ValueError: Invalid requirement '[project]' in pyproject.toml at line 1: Parse error at "'[project'": Expected W:(0-9A-Za-z)

Which indicates that pants is unable to parse the pyproject.toml file poetry generated. Pants version is 2.24.0 and poetry version is 2.1.3. Thanks in advance for any help.

I'd suggest you re-read https://www.pantsbuild.org/stable/docs/python/overview/third-party-dependencies and compare your configuration. You shouldn't specify your

[python.resolves]

to point at the pyproject.toml, it should point at your lockfile. You then create a

python_requirements

or

poetry_requirements

to use the pyproject.toml for generating that lockfile.

Thank you @gorgeous-winter-99296. I've gone through the document again. Using Poetry's lockfile causes a similar parsing error, when I try to generate-lockfiles.

ValueError: Invalid requirement '[[package]]' in poetry.lock at line 3: Parse error at "'[[packag'": Expected W:(0-9A-Za-z)

With this configuration in pants.toml

[source]
marker_filenames = ["pyproject.toml"]

[python]
interpreter_constraints = ["==3.11.*"]
enable_resolves = true
default_resolve = "poetry"

[python.resolves]
poetry = "poetry.lock"

And poetry.lock

# This file is automatically @generated by Poetry 2.1.3 and should not be changed by hand.

[[package]]
name = "aiohappyeyeballs"
version = "2.6.1"
description = "Happy Eyeballs for asyncio"
optional = false
python-versions = ">=3.9"
groups = ["main"]
files = [
    {file = "aiohappyeyeballs-2.6.1-py3-none-any.whl", hash = "sha256:f349ba8f4b75cb25c99c5c2d84e997e485204d2902a9597802b0371f09331fb8"},
    {file = "aiohappyeyeballs-2.6.1.tar.gz", hash = "sha256:c3f9d0113123803ccadfdf3f0faa505bc78e6a72d1cc4806cbd719826e943558"},
]

Ah, sorry, should've been specific. A pants lock file. Pants does not understand the Poetry lockfile; only the pyproject parts. So you can point it at

pants.lock

instead, or just remove the poetry lock.