[Python] Failed to install pyarrow 0.15.1 on Python 3.8

[asfimport]

Hi, I cannot install pyarrow 0.15.1

Steps:

$ python3 -m venv virtualenv
$ source virtualenv/bin/activate
$ pip install numpy
$ virtualenv/bin/python3 -c 'import numpy as n; print(n.__version__); print(n.get_include());'
1.17.4
/tmp/virtualenv/lib/python3.8/site-packages/numpy/core/include

$ pip install pyarrow==0.15.1

Log: see attached log

Environment: Arch Linux (5.4.2), Python 3.8.0
Reporter: Pavol Plaskoň
Assignee: Uwe Korn / @xhochy

Related issues:

• [Python] create manylinux wheels for python3.8 (duplicates)

Original Issue Attachments:

• pyarrow-pip.log

PRs and other links:

• GitHub Pull Request #6048

_{Note: This issue was originally created as ARROW-7407. Please see the migration documentation for further details.}

[asfimport]

Uwe Korn / @xhochy:
As mentioned in the log, you first need to install numpy to build pyarrow. This will be easier with the next release as there we will be a wheel for Python 3.8.

[asfimport]

Pavol Plaskoň:
See the third line in "Steps"...
and I thoutght that it was resolved in https://issues.apache.org/jira/browse/ARROW-6920 

[asfimport]

Uwe Korn / @xhochy:
[~enkeili] can you check that python -c 'import numpy as n; print(n.__version__); print(n.get_include());' also works?

 

In https://issues.apache.org/jira/browse/ARROW-6920 we have resolved the issue by enabling wheels for the upcoming Arrow releases, not for the last one.

[asfimport]

Pavol Plaskoň:

$ python -c 'import numpy as n; print(n.__version__); print(n.get_include());'
1.17.4
/tmp//pyarrow-test/virtualenv/lib/python3.8/site-packages/numpy/core/include 

Ok, so I'll wait for the next release, sorry for duplicate issue.

[asfimport]

Uwe Korn / @xhochy:
This is actually an issue, numpy is a build-time dependency but not declared in 

arrow/python/pyproject.toml

Line 19 in eb3e52e

requires = ["setuptools", "wheel", "setuptools_scm", "cython >= 0.29"]

[asfimport]

Antoine Pitrou / @pitrou:
Issue resolved by pull request 6048
#6048