title: How to install mlpy for Python 3 in macOS
body: <p>I am trying to install <a href="http://mlpy.sourceforge.net/docs/3.5/install.html" rel="nofollow noreferrer">mlpy</a> for Python3 (I need to use its implementation of the Dynamic Time Warping algo.) but I can't get it to work.</p>
  
  <p>The same package can be installed using Python 2.7, on the same machine, without problems, so I don't think that is an OS-related problem.</p>
  
  <p>Any help is very welcome!!</p>
  
  <pre><code># userx @ COG148 in ~/Downloads/mlpy-3.5.0 [12:09:06] 
  $ python3 setup.py install                                            
  running install
  running build
  running build_py
  running build_ext
  building 'mlpy.gsl' extension
  gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/userx/miniconda3/include -arch x86_64 -I/Users/userx/miniconda3/include -arch x86_64 -I/Users/userx/miniconda3/include/python3.6m -I/Users/userx/miniconda3/lib/python3.6/site-packages/numpy/core/include -I/Users/userx/miniconda3/include/python3.6m -c mlpy/gsl/gsl.c -o build/temp.macosx-10.7-x86_64-3.6/mlpy/gsl/gsl.o
  mlpy/gsl/gsl.c:223:10: fatal error: 'gsl/gsl_sf.h' file not found
  #include "gsl/gsl_sf.h"
           ^~~~~~~~~~~~~~
  1 error generated.
  error: command 'gcc' failed with exit status 1
  </code></pre>
  
  <p>Of course, I have <code>gsl</code> installed on my machine (iMac with macOS 10.12)</p>