Natmaster.com: Installing Trac 0.10, with a focus on Dreamhost customers. (December 2006.)

cactuswax.net: Installing Trac on Dreamhost. (July 2006.)

Dreamhost wiki on Trac, and on Clearsilver.

I wasn't able to install Subversion 1.4.3 (the latest as of this writing) because the Apache Portable Runtime dependency was too tricky for my blood. Looks like the build is supposed to be able to compile apr from source on its own, but the instructions don't work as written. NatMaster's instructions use 1.4.3, but make no mention of apr, so I dunno. The older Subversion 1.3.2 builds properly without explicitly locating apr. I was able to use the latest versions of all of the other components without a problem.