Changing matlab installation path probing?

[t20100]

As it is matlabengine detects matlab installation path in the setup.py at installation time by checking paths in LD_LIBRARY_PATH.

This requires:

• LD_LIBRARY_PATH to be defined
• The installation process to be held in the same environment as it will used

Why not also using shutil.which to probe for the installation path of matlab rather than only relying on LD_LIBRARY_PATH?

What about moving this probing from setup.py (which goal is to produce the _arch.txt file) to matlab/__init__.py where this information is actually used? This would allow to make wheels and be resilient to changes in the path matlab is installed.