Installation of Pandas in Pip v10.0.0b2 on PyPy fails

[davidjlloyd]

Code Sample, a copy-pastable example if possible

root@9b34418ce20d:/# /opt/pypyenv/bin/pip install pandas
Looking in indexes: https://devpi.myindex/root/myindex/+simple/
Collecting pandas
  Downloading https://devpi.myindex/root/pypi/+f/c7a/2757b60774825/pandas-0.22.0.tar.gz (11.3MB)
    100% |################################| 11.3MB 1.5MB/s 
  Could not find a version that satisfies the requirement Cython (from versions: )
No matching distribution found for Cython

Problem description

See pypa/pip#5171 for the other side of this issue. Pandas defines a pyproject.toml for PEP 518 compliance. Unfortunately, Pip 10 only partially supports PEP 518; it requires that all dependencies be available as binary distributions which is generally not the case for implementations like PyPy. As such installation fails as above.

[TomAugspurger]

Is there anything pandas should do here? From my brief skim of pypa/pip#5171 it's not clear what we should change (if anything).

Note, we just followed SciPy here: https://github.com/scipy/scipy/blob/master/pyproject.toml, so they'll have similar issues.

[davidjlloyd]

Unclear. PyPA are suggesting that the implementation of PEP 518 was premature, but I'm not sure I agree with that. At least having this issue reported here will help people find out what's wrong and how to fix it (for reference, you can somewhat avoid the issue by passing the flag --no-build-isolation to Pip 10). I think it is up to Pandas contributors to decide what, if any, action should be taken in response to this upcoming issue.

[TomAugspurger]

Yes, thanks for raising the issue. I suspect that others know more about what the proper thing to do here is. We're happy to just follow best practices.

…

On Thu, Apr 12, 2018 at 7:29 AM, davidjlloyd ***@***.***> wrote: Unclear. PyPA are suggesting that the implementation of PEP 518 was premature, but I'm not sure I agree with that. At least having this issue reported here will help people find out what's wrong and how to fix it (for reference, you can somewhat avoid the issue by passing the flag --no-build-isolation to Pip 10). I think it is up to Pandas contributors to decide what, if any, action should be taken in response to this upcoming issue. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#20666 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABQHIvUWWcxvbzhBn2qHqHiY3Y43ULwRks5tn0i7gaJpZM4TRrZh> .

[dinapappor]

This also happens in a virtualenv with python 3.6 (no pypy) on FreeBSD 11.1 (fully patched).

[jorisvandenbossche]

I think this issue is another reason to remove pyproject.toml for now: #20718 (that will of course only solve it once 0.23.0 is out)

[diraol]

This also happens on Debian 9, python 3.6 pip 10.0.0, setuptools 39.0.1 and wheel 0.31.0 (linux) while trying to install without binaries.

[jorisvandenbossche]

You can pass --no-build-isolation flag to pip to avoid this problem (pypa/pip#5229).

[dinapappor]

Passing --no-build-isolation yields a cc error for me.

[TomAugspurger]

If you aren’t using binaries then you’ll need a compiler.

…

________________________________ From: Andreas Anderssson <notifications@github.com> Sent: Tuesday, April 17, 2018 9:52:43 PM To: pandas-dev/pandas Cc: Tom Augspurger; Comment Subject: Re: [pandas-dev/pandas] Installation of Pandas in Pip v10.0.0b2 on PyPy fails (#20666) Passing --no-build-isolation yields a cc error for me. — You are receiving this because you commented. Reply to this email directly, view it on GitHub<#20666 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/ABQHIsy4HkAFTVoqhChD9sk3crfM18NXks5tpqp7gaJpZM4TRrZh>.

[dinapappor]

I do have a compiler installed (clang). Which is infact successfully used by other python dependencies that needs to be compiled. Let me get back later with the full error message. Den ons 18 apr. 2018 06:14Tom Augspurger <notifications@github.com> skrev:

…

If you aren’t using binaries then you’ll need a compiler. ________________________________ From: Andreas Anderssson ***@***.***> Sent: Tuesday, April 17, 2018 9:52:43 PM To: pandas-dev/pandas Cc: Tom Augspurger; Comment Subject: Re: [pandas-dev/pandas] Installation of Pandas in Pip v10.0.0b2 on PyPy fails (#20666) Passing --no-build-isolation yields a cc error for me. — You are receiving this because you commented. Reply to this email directly, view it on GitHub< #20666 (comment)>, or mute the thread< https://github.com/notifications/unsubscribe-auth/ABQHIsy4HkAFTVoqhChD9sk3crfM18NXks5tpqp7gaJpZM4TRrZh >. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#20666 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFSjzaapNO0h9uY8yUihrXaA2ZwOXZuLks5tpr22gaJpZM4TRrZh> .

[dinapappor]

This is the error I am getting:

distutils.errors.LinkError: Command "cc /tmp/tmp86b2sak0/tmp/tmp86b2sak0/source.o -L/usr/local/lib -lblas -o /tmp/tmp86b2sak0/a.out" failed with exit status 1

[dinapappor]

The previous comment was actually because I already had numpy installed as an os level package in FreeBSD. Seems to work with --no-build-isolation.