Update installation instructions to include fortran compiler dependency

CamDavidsonPilon / Probabilistic-Programming-and-Bayesian-Methods-for-Hackers

aka "Bayesian Methods for Hackers": An introduction to Bayesian methods + probabilistic programming with a computation/understanding-first, mathematics-second point of view. All in pure Python ;)

MIT License

26.55k stars 7.85k forks source link

Hello,

Enoying this superb book so far.

When trying to build the python environment (on ubuntu 18.04) ala:

mkvirtualenv bayes
pip install -r requirements.txt

I received several cryptic error messages about pymc not installing to do with an unavailable numpy module. After some digging I found the cause to be that pymc requires a fortran compiler to be installed.

After installing gfortran it went smoothly.

I'd suggest adding a note somewhere in the README to inform people that gfortran or equivalent is required to build.

CamDavidsonPilon / Probabilistic-Programming-and-Bayesian-Methods-for-Hackers

Update installation instructions to include fortran compiler dependency #405