Improve details on installation

[jpinedaf]

I am trying to install the package, however, it is not well documented what needs to be modified. I guess that this is the suggested method:

python setup.py install --user

However, this must be modified in the setup.py file

MNEST_DIR = Path('/users/bsvoboda/code/MultiNest')

maybe use the LD_LIBRARY_PATH variable.

Also, if I need to use the icc compiler instead of gcc, then this command line could be used:

LDSHARED="icc -shared" CC=icc python setup.py install --user

also, I think that -openmp should be removed from setup.py in the case of using icc

How do you setup the code for a new dataset? What is the shortcut?

[autocorr]

Hi Jaime, I've updated the installation instructions in the README. For right now, I recommend cloning the repo, editing the setup.py file with your preferred compiler directives, running make, and then adding the directory to your Python path. I would recommend this over installing it your environment's site-packages mostly because you will almost certainly need to modify something, and you might find that easier to do that on a separate git branch compared to repeatedly re-installing it whenever a change is made.

Note that I added an environment variable for the MultiNest directory MNEST_DIR. Hard-coded pathes should now be removed, but some relative paths and un-tracked data files exist that I use for testing (like nestfit.main.get_test_cubestack or nestfit.main.test_fit_cube).

I'm fairly inexperienced with Python packaging and distribution however, so any tips are welcome. The setup.py pile is mostly for building the extension module rather than installing it.