Is it possible to express a platform-specific dependency in setup.py without building platform-specific versions of my egg?
For sdist, egg and wheel release from : http://setuptools.readthedocs.io/en/latest/setuptools.html#declaring-platform-specific-dependencies
Sometimes a project might require a dependency to run on a specific platform. This could to a package that back ports a module so that it can be used in older python versions. Or it could be a package that is required to run on a specific operating system. This will allow a project to work on multiple different platforms without installing dependencies that are not required for a platform that is installing the project.
setup(
name="Project",
...
install_requires=[
'enum34 ; python_version<"3.4"',
'pywin32 >= 1.0 ; platform_system=="Windows"'
]
)
In setup.py
:
from setuptools import setup
import sys
setup(
name="...",
install_requires=["This", "That"] + (
["WinOnly", "AnotherWinOnly"] if sys.platform.startswith("win") else []
)
)
distutils.util.get_platform
has more information than sys.platform
if you need it:
>>> sys.platform
'linux2'
>>> distutils.util.get_platform()
'linux-i686'
Use the extras_require
distribution option to make 'win32 support' an optional feature:
setup(
...
extras_require={
'win32': 'pywin32'
},
...
)
Then specify the win32 feature when installing on Windows:
easy_install mypackage[win32]
This will pull down the pywin32
package, which is listed as a dependency for the 'win32' feature of mypackage.
See here for more information about optional features.