scikit-learn/scikit-learn — pull request #3459 by ogrisel (2014-07-21 08:10:40+00:00)
Title: [MRG] make it possible to use the system joblib

Set `export SKLEARN_SYSTEM_JOBLIB=1` in your env to use the development version of joblib installed in your python modules (for instance using `pip install -e joblib_source_folder`) instead of the embedded copy.