(🐞) Unable to install pyrfc with poetry 1.2

[KotlinIsland]

• 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 22.04
• Poetry version: 1.1.15 / 1.2.0rc2
• Link of a Gist with the contents of your pyproject.toml file:

[tool.poetry]
name = "test"
version = "1.0.0"
description = ""
authors = []

[tool.poetry.dependencies]
Cython = "*"
pyrfc = "*"

Issue

Sorry, I really have no idea whats going on here, it installs fine with 1.1.15 and with pip, but when I use poetry 1.2 it fails.

👉 poetry@1.1.15 install
success

👉 poetry@1.2.0rc2 install
...
        Cython not installed: https://cython.readthedocs.io/en/latest/src/quickstart/install.html
...

Here is the relevant part of the pyrfc's setup.py

    install_requires=["setuptools"],
    setup_requires=[
        "setuptools-git",
        "cython; platform_system != 'Windows'"
    ],

[finswimmer]

Hello @KotlinIsland,

not sure why it looks like poetry 1.1.15 can install pyrfc. I guess it was already somehow installed. For me it fails with any version and the reason is clear:

There is no wheel file for linux systems, so the package has to build from the sdist. But the maintainer of this package missed to add a pyproject.toml and define the build requirements according to PEP-518. So there is nothing poetry can do here. Please contact the maintainer of the package and ask them to add the required file with required information.

fin swimmer

[KotlinIsland]

@finswimmer Thanks, I've raised it with pyrfc.

I do know for certain that it was not installed previously. Is this something you would be interested in investigating?

FROM python

#RUN curl -sSL https://install.python-poetry.org | python3.10 - --version 1.2.0rc2
RUN curl -sSL https://install.python-poetry.org | python3.10 - --version 1.1.15

ENV PATH=$PATH:/root/.local/bin

COPY pyproject.toml .

RUN poetry install

This doesn't install all the way, due to pyrfc having other dependencies, but it definitely picks up the cython.

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