I'm just doing the same, the svn compiled fine at first but then complained about the missing package microb-eal. Apparently that package has been renamed to browser-eal in Diablo.
After updateing that dependency the package installed fine, but still doesn't show up as a component even though the browser shows "Updating..." on startup.

I wonder whether it needs to be built against the current microb svn!?

Edit: The last post in
http://code.google.com/p/gears/issue...id=292&redir=1
seems to confirm that.