Using Mercurial

Go to http://code.google.com/p/alembic/source/checkout and follow the instructions. This will get you our main repository, which will contain both the "default" branch as well as any named release branches. The named release branches should be very stable: only bugfixes go into them. "default" is not guaranteed to be buildable or less buggy than a release branch.

Download a gzipped tarball

Go to http://code.google.com/p/alembic/downloads/list and click on the little arrow to the left of the "featured download"; that will be a copy of the state of something very near to the tip of the latest release branch.

Building Alembic

Once you have the source code, there is a README.txt file at the root level of the source. It contains instructions for building Alembic.