gistfile1.txt

git clone https://github.com/MTG/sms-tools

cd sms-tools

...make somechanges

git diff > my_custom_changes.patch

#############################

mkdir tmp

virtualenv2 tmp/ --python=python2.7

echo tmp >> .git/info/exclude

source tmp/env/bin/activate

pip install 'numpy<=1.10'

# if necessary install other dependencies like a cython, numpy and etc.