wkb.loads raises excepiton on ARM

[Xevib]

Description

• On execute:

from shapely import wkb
wkb.loads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hex=True)

On an ARM machine I get the follwing error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/xevi/.virtualenvs/osmand/lib/python3.6/site-packages/shapely/wkb.py", line 14, in loads
    return reader.read_hex(data)
  File "/home/xevi/.virtualenvs/osmand/lib/python3.6/site-packages/shapely/geos.py", line 409, in read_hex
    "Could not create geometry because of errors "
shapely.errors.WKBReadingError: Could not create geometry because of errors while reading input.

If I run the same code on my laptop it works

Expected behavior and actual behavior.

Return a shapely.geometry.polygon.Polygon

Steps to reproduce the problem.

from shapely import wkb
wkb.loads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hex=True)

Operating system

Linux  4.9.93-mainline-rev1 #1 SMP Tue Apr 10 09:42:40 UTC 2018 armv7l armv7l armv7l GNU/Linux

Shapely version and provenance

Shapely==1.6.4.post2 installed from pip

[snorfalorpagus]

Which distro are you using?

What version of GEOS and how was it installed?

[Xevib]

Theddistro is:

Distributor ID: Ubuntu
Description:    Ubuntu 18.04.2 LTS

I supose the geos version is this:

# dpkg -l|grep geos
ii  libgeos-3.6.2:armhf               3.6.2-1build2                      armhf        Geometry engine for Geographic Information Systems - C++ Library
ii  libgeos-c1v5:armhf                3.6.2-1build2                      armhf        Geometry engine for Geographic Information Systems - C Library

[sgillies]

The linux wheels on PyPI don't support ARM (see pypa/manylinux#84 for some background, we're using the manylinux1 docker image to build wheels). I thought that pip would prohibit you from installing them. What version of pip do you have on the ARM machine?

Since you were able to install GEOS on the ARM machine, you can uninstall shapely and reinstall using the --no-binary shapely option like this: python -m pip install --no-binary shapely shapely.

[jorisvandenbossche]

I thought that pip would prohibit you from installing them. What version of pip do you have on the ARM machine?

I suppose pip already installed from source? (indeed I would think pip would not download the wheel, at least that should be the purpose of manylinux I think)

There is some effort in conda-forge to provide arm packages (see eg conda-forge/conda-smithy#1069, conda-forge/pandas-feedstock#62), which could be interesting (although they didn't build the geo stack yet)