[jira] [Created] (ARROW-3012) Installation crashes on Python 3.7

["Diego Argueta (JIRA)" <ji...@apache.org>]

Diego Argueta created ARROW-3012:
------------------------------------

             Summary: Installation crashes on Python 3.7
                 Key: ARROW-3012
                 URL: https://issues.apache.org/jira/browse/ARROW-3012
             Project: Apache Arrow
          Issue Type: Bug
          Components: Python
    Affects Versions: 0.10.0
         Environment: OS: MacOS High Sierra (10.13.5)
Python: 3.7.0
Cython: 0.28.5
            Reporter: Diego Argueta


To reproduce, on Python 3.7.0: 
{code:none}
pip3.7 install pyarrow==0.10.0
{code}
 

The result is a crash:
{code:none}
Collecting pyarrow
Using cached https://files.pythonhosted.org/packages/c0/a0/f7e9dfd8988d94f4952f9b50eb04e14a80fbe39218520725aab53daab57c/pyarrow-0.10.0.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/setup.py", line 545, in <module>
url="https://arrow.apache.org/"
File "/Users/tux/.pyenv/versions/3.7.0/lib/python3.7/site-packages/setuptools/__init__.py", line 131, in setup
return distutils.core.setup(**attrs)
File "/Users/tux/.pyenv/versions/3.7.0/lib/python3.7/distutils/core.py", line 108, in setup
_setup_distribution = dist = klass(attrs)
File "/Users/tux/.pyenv/versions/3.7.0/lib/python3.7/site-packages/setuptools/dist.py", line 370, in __init__
k: v for k, v in attrs.items()
File "/Users/tux/.pyenv/versions/3.7.0/lib/python3.7/distutils/dist.py", line 292, in __init__
self.finalize_options()
File "/Users/tux/.pyenv/versions/3.7.0/lib/python3.7/site-packages/setuptools/dist.py", line 529, in finalize_options
ep.load()(self, ep.name, value)
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/.eggs/setuptools_scm-3.0.6-py3.7.egg/setuptools_scm/integration.py", line 23, in version_keyword
dist.metadata.version = get_version(**value)
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/.eggs/setuptools_scm-3.0.6-py3.7.egg/setuptools_scm/__init__.py", line 135, in get_version
parsed_version = _do_parse(config)
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/.eggs/setuptools_scm-3.0.6-py3.7.egg/setuptools_scm/__init__.py", line 77, in _do_parse
parse_result = _call_entrypoint_fn(config, config.parse)
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/.eggs/setuptools_scm-3.0.6-py3.7.egg/setuptools_scm/__init__.py", line 40, in _call_entrypoint_fn
return fn(config.absolute_root)
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/setup.py", line 498, in parse_version
return version_from_scm(root)
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/.eggs/setuptools_scm-3.0.6-py3.7.egg/setuptools_scm/__init__.py", line 28, in version_from_scm
return _version_from_entrypoint(root, "setuptools_scm.parse_scm")
File "/private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/.eggs/setuptools_scm-3.0.6-py3.7.egg/setuptools_scm/__init__.py", line 44, in _version_from_entrypoint
for ep in iter_matching_entrypoints(config.absolute_root, entrypoint):
AttributeError: 'str' object has no attribute 'absolute_root'

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/6r/dy0_bd2x2kn735d8kymc4qt00000gn/T/pip-install-w77cbide/pyarrow/

{code}
 

I suspect this is because {{setuptools_scm}} isn't being used correctly. All the documentation says to use {{get_version()}} and the package author doesn't seem to be sure that {{version_from_scm()}} should even be a public function (see [here|[https://github.com/pypa/setuptools_scm/blob/master/src/setuptools_scm/__init__.py#L27]).]

 
 Perhaps using the standard function would fix the issue?



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