Before you install
This is not a stand-alone version of Mercurial.
To use it, you must have the Universal MacPython 2.4.3 from www.python.org installed.
You can download MacPython 2.4.3 from here:
http://www.python.org/ftp/python/2.4.3/Universal-MacPython-2.4.3-2006-04-07.dmg
After you install
This package installs the hg executable in /Library/Frameworks/Python.framework/Versions/Current/bin. This directory may not be in your shell's search path. The MacPython installer will have created an entry in .profile for it but if your shell doesn't use .profile you'll need configure it yourself or create a symlink from a directory already in your path.
Documentation
Visit the Mercurial web site and wiki
There's also a free book, Distributed revision control with Mercurial
Reporting problems
If you run into any problems, please file a bug online: