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https://issues.apache.org/jira/browse/ARROW-8052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17055830#comment-17055830
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Joris Van den Bossche commented on ARROW-8052:
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I don't think this should be expected to work (we have the conda env yml files
in ci/ for creating test environments with conda).
Since the syntax for pip and conda is not exactly the same, it seems difficult
to make the requirements file compatible with conda (eg in pandas, we maintain
both, but generate with a script that makes some edits the requirement file
from the conda env file)
> [Python] requirements-test.txt cannot be used with conda install --file
> -----------------------------------------------------------------------
>
> Key: ARROW-8052
> URL: https://issues.apache.org/jira/browse/ARROW-8052
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Reporter: Wes McKinney
> Priority: Major
>
> Not sure if a bug but wanted to report anyway
> {code}
> (arrow) C:\projects\arrow\python>conda install -y --file=requirements.txt
> --file=requirements-test.txt -c conda-forge
> CondaValueError: could not parse 'hypothesis; python_version > "3.5.2"' in:
> requirements-test.txt
> {code}
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