poetry export > requirements.txt without a virtualenv produces an invalid requirements file

[andreareina]

• 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: Linux, various versions
• Poetry version: >= 1.2.0
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/andreareina/03b937a2789e82b68d45d53467224f7e

Issue

Starting with v1.2.0 poetry export creates a virtualenv if one is not already present. This causes a message ("Creating virtualenv ...") to be printed to stdout and so results in an invalid requirements file. We run poetry export > requirements.txt as part of a CI/CD build so there isn't an existing virtualenv.

/tmp/poetry-repro $ docker build -t poetry-repro .
Sending build context to Docker daemon  16.77MB
Step 1/3 : FROM public.ecr.aws/lambda/python:3.8
 ---> 247b5632d3d3
Step 2/3 : COPY pyproject.toml .
 ---> Using cache
 ---> 2a74b8c9b9a7
Step 3/3 : COPY poetry.lock .
 ---> Using cache
 ---> d92fc10d399b
Successfully built d92fc10d399b
Successfully tagged poetry-repro:latest

/tmp/poetry-repro $ docker run --rm -aSTDOUT --entrypoint /bin/bash poetry-repro -c "pip3 install 'poetry<1.2.0' > /dev/null && poetry --version && poetry export | head"
Poetry version 1.1.15
bottle==0.12.23

/tmp/poetry-repro $ docker run --rm -aSTDOUT --entrypoint /bin/bash poetry-repro -c "pip3 install 'poetry==1.2.0' > /dev/null && poetry --version && poetry export | head"
Poetry (version 1.2.0)
Creating virtualenv poetry-repro-AsW4q1BB-py3.8 in /root/.cache/pypoetry/virtualenvs
bottle==0.12.23 ; python_version >= "3.8" and python_version < "4.0"

[kigawas]

Same here. Creating virtualenv ... breaks lots of build

[finswimmer]

Hey,

the export command is now a plugin and is developed in it's own repository: https://github.com/python-poetry/poetry-plugin-export

There this was already reported in python-poetry/poetry-plugin-export#78

fin swimmer

[andreareina]

Thanks, I saw somewhere that it had gotten split out to a plugin, didn't realize that meant a new repo.

Future searchers: replace > requirements.txt with --output requirements.txt

[github-actions]

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