Hmmm, you need Pyrex installed to be able to build D-BUS. Thing is that JHBuild doesn't install Pyrex (or if it does, it does it later), so that appropriate modules aren't available to its Python install, resulting in D-BUS failing to build.

Have installed Pyrex manually into my jhbuild path, and restarted the tinderbox, I'll leave it going overnight. The tinderbox status for this build is here, although note that D-BUS failed to install this time. I'll have to hit Bugzilla and Bugzilla in the morning.

Decided to do a tinderbox build, will periodically upload the latest tinderbox status to http://home.rubberturnip.org.uk/jhbuild-logs/.

I finally succumbed to the temptation:

# jhbuild build