Using the Python support on OS X

[John Wiegley]

If you're a Ledger user who's on Mac OS X and you want to build and  
install the ledger module for Python, you'll need to install Boost  
with Python support:

  sudo port install -f boost +debug+python26+st

Then run "./acprep clean update" to wipe your current version and  
update to the latest.

John