psycopg2, pymc, theano and DYLD_FALLBACK_LIBRARY_PATH
macos, psycopg, pymc, python, theano
Solution
The development version of Theano don't need changes to DYLD_FALLBACK_LIBRARY_PATH. So undo the change to it and update your Theano version. From:
http://www.deeplearning.net/software/theano/install.html#bleeding-edge-install-instructions
Run one of those 2 command depending of your need:
pip install --upgrade --no-deps git+git://github.com/Theano/Theano.git --install-option='--prefix=~/.local'
pip install --upgrade --no-deps git+git://github.com/Theano/Theano.git
EDIT: I removed the link to an answer elsewhere and copied the answer here. Thanks
Problem
I am unable to use `pymc` along with `psycopg2`. The following simple snippet from the tutorial: ``` import pymc as pm with pm.Model() as model: x = pm.Normal('x', mu=0., sd=1) ``` results in the following error: Exception: The environment variable 'DYLD_FALLBACK_LIBRARY_PATH' does not contain the '/Users/josh/anaconda/envs/py27/lib' path in its value. This will make Theano unable to compile c code. Update 'DYLD_FALLBACK_LIBRARY_PATH' to contain the said value, this will fix this error. I was able to fix this problem by adding: ``` export DYLD_FALLBACK_LIBRARY_PATH=$DYLD_FALLBACK_LIBRARY_PATH:/Users/josh/anaconda/envs/py27/lib ``` to my shell init file `.bashrc`. However, and this is the part I don't understand, that line breaks `psycopg2`: ``` ---> 50 from psycopg2._psycopg import BINARY, NUMBER, STRING, DATETIME, ROWID 51 52 from psycopg2._psycopg import Binary, Date, Time, Timestamp ImportError: dlopen(/Users/josh/anaconda/envs/py27/lib/python2.7/site-packages/psycopg2/_psycopg.so, 2): Library not loaded: @loader_path/../../../libpq.5.dylib Referenced from: /Users/josh/anaconda/envs/py27/lib/python2.7/site-packages/psycopg2/_psycopg.so Reason: image not found ``` How can I have `psycopg2` and `pymc` (here `theano`) live happily together? This is on OS X with a Python 2.7.6 installation with an Python environment created with conda.