No documentation about markers (such as platform)

[thernstig]

• [x ] I have searched the issues of this repo and believe that this is not a duplicate.

Issue

There seems to be no mention in the documentation of the usage and supported markers, but they do seem to be supported according to #21

[nyanpasu64]

What platform do I use for Windows 10 x64?

I'm using Poetry 0.12.10.

poetry remove pywin32-ctypes
pip uninstall -y pywin32-ctypes
pyinstaller
poetry add --platform=windows pywin32-ctypes
pyinstaller

And I"ve tried windows, Windows, nt, and pywin32-ctypes never gets installed.

EDIT: poetry install creates setup.py containing:

extras_require = \
{':sys_platform == "windows"': ['pywin32-ctypes>=0.2.0,<0.3.0']}

sys.platform is "win32" so I should use sys.platform.

[carlosperate]

I was looking into this recently and cound't find the documentation either, are platform markers officially supported?

[deepio]

Could this be documented please? @sdispater
#1189

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[thernstig]

/ unstale 📦

[eterna2]

can I check if

extras_require = \
{':sys_platform == "windows"': ['pywin32-ctypes>=0.2.0,<0.3.0']}

is a valid setup.py format? Because I get format error (extras_require must be a dict of xyz) when I tried to do python setup.py install

[zillionare]

where can I find the documentation for specifying sys_platform. According to the thread, it's added to the document, however I can't find it in the document.

[sinoroc]

@zillionare It's in the "Dependency specification -- Using environment markers" section.

Example:

[tool.poetry.dependencies]
pathlib2 = { version = "^2.2", markers = "python_version ~= '2.7' or sys_platform == 'win32'" }

The complete specification for environment markers is in PEP 508.

[dclong]

Is it possible to restrict the whole package to be on, say, Linux only? Do I have to use marker for every package or is there a simple way of specifying OS restrictions?

[sinoroc]

Is it possible to restrict the whole package to be on, say, Linux only? Do I have to use marker for every package or is there a simple way of specifying OS restrictions?

@dclong Use trove classifiers. They are an informal (non-enforced) restriction:

[tool.poetry]
# ...
classifiers = [
    "Operating System :: POSIX :: Linux",
]

• the name of artifact #3356 (comment)
• https://pypi.org/classifiers/
• https://python-poetry.org/docs/pyproject/#classifiers

[dclong]

@sinoroc This is awesome! Thank you very much for the links! I will check them.

[github-actions]

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