To enable StarCluster's git hooks that perform PEP8 formatting and pyflakes validation prior to committing:

1. Check out the StarCluster repo:

   $ git clone https://github.com/jtriley/StarCluster.git
   

2. Next change the current working directory to the root of the repo:

   $ cd StarCluster
   

3. Make symbolic links to the hooks in your <repo>/.git/hooks directory:

   $ ln -s $PWD/git-hooks/pre-commit $PWD/.git/hooks/pre-commit
   

4. Install both pep8 and pyflakes packages from PYPI:

   $ easy_install pep8 pyflakes
   

Now whenever you run git commit both PEP8 and PyFlakes will check the files to be committed for errors, e.g.:

$ git commit
>>> Running pyflakes...
starcluster/awsutils.py:333: undefined name 'blah'
ERROR: pyflakes failed on some source files
ERROR: please fix the errors and re-run this script