If you are interested in the development version of Blaze you can obtain the source from Github.
$ git clone firstname.lastname@example.org:ContinuumIO/blaze.git
Many of the dependencies ( i.e. llvmpy ) are non-trivial to install. It is highly recommend that you build Blaze using the Anaconda distribution, a free Python distribution that comes with a host of scientific and numeric packages bundled and precompiled into a userspace Python environment.
Anaconda can be downloaded for all platforms here: http://continuum.io/anaconda.html .
To build project inside of Anaconda:
$ python setup.py install
To build documentation on a unix-based system:
$ make docs
To run tests:
$ python -c 'import blaze; blaze.test()'