Look no further than Fossil SCM. It had a distributed ticket system as well as a wiki, and it was developed by Dr. Hibbs (of SQLite fame) who provides unbelievable support for it: I saw him address a user's question on the mailing list within ten minutes this morning (Labor Day for posterity). And I'm using it for all of my projects now.

Another nice thing is that there's no notion of Git's "bare repository." A repository is a single SQLite database file, and you check out your working directory from it.

It also comes with a browser-based UI (no Tk) that includes the wiki, tickets, and admin. Oh, and it has an optional "autosync" mode that will push your changes immediately to a remote repository if you're connected.

In all, a high-quality piece of software.