Numexpr fails to install from source

[EricR86]

From a fresh install (or virtualenv), numexpr fails to install from source. The following error occurs:

$ python setup.py install
Traceback (most recent call last):
  File "setup.py", line 223, in <module>
    setup_package()
  File "setup.py", line 62, in setup_package
    from numpy.distutils.core import setup
ImportError: No module named numpy.distutils.core

Specifically the Line 62 in setup.py (https://github.com/pydata/numexpr/blob/master/setup.py#L62) presumes numpy is already installed before even running setup itself. I doubt this was intended since numpy is also listed inside setup_requires.

This issue seems to be related to PyTables/PyTables#454

[andreabedini]

Yes, setup.py should not import numpy (at least before checking it is installed). The typical way to go around this is to override the build_ext command. Numexpr should check what pytables and pandas do.

edit: actually numexpr seems to do something fancy about numpy in setup.py, but I couldn't figure out what it's doing exactly.

[trtm]

still fails to build and install from source... last working version for me is 2.4.3
( pip install -v numexpr==2.4.3 )

[FrancescAlted]

@trtm I would need a log to figure out what's going on. BTW, I have fixed an install issue in PR #189. Could you have a try?

[trtm]

this was fast. thank you. last "merge pull request #189" fixed it for me.

[FrancescAlted]

Great. @EricR86 Do you think we can close this one?

[EricR86]

Unfortunately I can still easily reproduce this error. I just created a new virtualenv with no python packages installed. I then tried to install numexpr from source using the newly uploaded 2.4.6 to PyPI and got the identical error posted earlier:

$ python setup.py install
Traceback (most recent call last):
  File "setup.py", line 223, in <module>
    setup_package()
  File "setup.py", line 62, in setup_package
    from numpy.distutils.core import setup
ImportError: No module named numpy.distutils.core

This presumes that 2.4.6 includes the fix from pull request #189 (which I assume it does).

[andreabedini]

@EricR86 python setup.py install doesn't install the dependencies and you have to do it yourself. Try pip install .

[FrancescAlted]

Yeah, I think the workaround by @andreabedini is fine. I think we can close this one.

[EricR86]

I ran a bunch of tests and I can confirm that I can install this through pip. Though technically, numexpr still cannot be installed from source. If possible I'd suggest changing this to a "wontfix".

[FrancescAlted]

Ok. Wontfix it is :)