I’ve been working through the following book on Bayesian methods with an emphasis on the pymc library:
However, pymc installation on OS X can be a bit of a pain. The issues comes down to fortran… I know. The version of gfortran in newer gcc implementations doesn’t work well with the pymc build, you need gfortran 4.2, as provided orignally by apple. Homebrew has a package for this.
I dealt with this before, but had problems again after upgrading to Sierra. So this time, I thought I’d document the steps so I don’t have this problem again. Let me know if there are any steps that you feel need added as you try this.
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| brew install python3 | |
| brew install apple-gcc42 | |
| brew unlink gcc | |
| ln -sf /usr/local/bin/gfortran-4.2 /usr/local/bin/gfortran | |
| #optional: create virtualenv | |
| python3 -mvenv ~/venvs/my_venv | |
| source ~/venvs/my_venv/bin/activate | |
| #end optional | |
| pip3 install numpy | |
| pip3 install pymc | |
| # restore gcc | |
| rm /usr/local/bin/gfortran | |
| brew link gcc |
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