Welcome to the Tahoe project, a secure, decentralized, fault-tolerant filesystem.
See the about page for more information.
This procedure has been verified to work on Windows, Cygwin, Mac, Linux, Solaris, and FreeBSD. It's likely to work on other platforms. If you have trouble with this install process, please write to the tahoe-dev mailing list, where friendly hackers will help you out.
Follow the instructions on the Python v2.5.2 download page to download and install Python v2.5.2.
Download a recent zip file from here:
http://allmydata.org/source/tahoe/releases
The larger -SUMO tarballs include all the automatically-installable dependencies; use the smaller regular tarball if you don't mind the build process downloading the things it needs, or if you've downloaded and unpacked the http://allmydata.org/source/tahoe/deps/tahoe-deps.tar.gz bundle.
Unpack the zip file and cd into the top-level directory.
Run python setup.py build_tahoe to build and to install the tahoe executable into a subdirectory of the current directory named bin.
Run python trial to verify that it built correctly and passes all tests.
Run bin/tahoe --version to verify that the executable tool runs and prints out the right version number (the "allmydata" version number is the version number of the Tahoe package).
Now you have the Tahoe source code installed and are ready to use it to form a decentralized filesystem. The tahoe executable in the bin directory can configure and launch your Tahoe node. See running.html for instructions on how to do that.
For more details, including platform-specific hints for debian, windows, and Mac systems, please see the InstallDetails wiki page.