pip install monetdblite on linux installs Mach-O binary

[padelt]

It seems as if the wheel delivers a Mac binary for libmonetdb5.so.

Broken:

docker run -it --rm python:3.6 bash -c 'pip install numpy && pip install monetdblite && file /usr/local/lib/python3.6/site-packages/monetdblite/libmonetdb5.so && python -c "import monetdblite"'
Collecting numpy
  Downloading https://files.pythonhosted.org/packages/71/90/ca61e203e0080a8cef7ac21eca199829fa8d997f7c4da3e985b49d0a107d/numpy-1.14.3-cp36-cp36m-manylinux1_x86_64.whl (12.2MB)
    100% |████████████████████████████████| 12.2MB 968kB/s
Installing collected packages: numpy
Successfully installed numpy-1.14.3
Collecting monetdblite
  Downloading https://files.pythonhosted.org/packages/7c/c9/e6ae712fb1713b771d552220414c2d90efdc9958fbc8e1c426e5ef665644/monetdblite-0.2.0-py3-none-any.whl (2.3MB)
    100% |████████████████████████████████| 2.4MB 410kB/s
Installing collected packages: monetdblite
Successfully installed monetdblite-0.2.0
/usr/local/lib/python3.6/site-packages/monetdblite/libmonetdb5.so: Mach-O 64-bit x86_64 dynamically linked shared library
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/monetdblite/__init__.py", line 13, in <module>
    from monetdblite import connections
  File "/usr/local/lib/python3.6/site-packages/monetdblite/connections.py", line 7, in <module>
    from monetdblite import cursors
  File "/usr/local/lib/python3.6/site-packages/monetdblite/cursors.py", line 9, in <module>
    from monetdblite import embeddedmonetdb
  File "/usr/local/lib/python3.6/site-packages/monetdblite/embeddedmonetdb.py", line 32, in <module>
    libs[0]), mode=ctypes.RTLD_GLOBAL)
  File "/usr/local/lib/python3.6/ctypes/__init__.py", line 348, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: /usr/local/lib/python3.6/site-packages/monetdblite/libmonetdb5.so: invalid ELF header

Workaround by forcing non-wheel installation:

docker run -it --rm python:3.6 bash -c 'pip install numpy && pip install --no-binary monetdblite monetdblite && file /usr/local/lib/python3.6/site-packages/monetdblite/libmonetdb5.so && python -c "import monetdblite"'
Collecting numpy
  Downloading https://files.pythonhosted.org/packages/71/90/ca61e203e0080a8cef7ac21eca199829fa8d997f7c4da3e985b49d0a107d/numpy-1.14.3-cp36-cp36m-manylinux1_x86_64.whl (12.2MB)
    100% |████████████████████████████████| 12.2MB 798kB/s
Installing collected packages: numpy
Successfully installed numpy-1.14.3
Collecting monetdblite
  Downloading https://files.pythonhosted.org/packages/b4/70/7e3d21f31c01f0bf6f4814248a372799a9dc0572f2a2eadff2387c86c4dd/monetdblite-0.2.0.tar.gz (2.2MB)
    100% |████████████████████████████████| 2.2MB 957kB/s
Skipping bdist_wheel for monetdblite, due to binaries being disabled for it.
Installing collected packages: monetdblite
  Running setup.py install for monetdblite ... done
Successfully installed monetdblite-0.2.0
/usr/local/lib/python3.6/site-packages/monetdblite/libmonetdb5.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=1dc9c59c4031ca18ffc9eed3778d13eac3d6975d, not stripped

Note the use of --no-binary monetdblite to make it work.