according to upstream's ext/tk/extconf.rb, ruby is not yet compatible with Tcl/Tk 8.6.
Then I tried to build it with 8.6 as the default, and only build-depending on tk8.5. which failed. Here are the ugly hacks to build it with 8.5 as a non-default version, for 1.9 and 2.0. http://launchpadlibrarian.net/161585999/ruby1.9.1_1.9.3.484-1ubuntu1_1.9.3.484-1ubuntu2.diff.gz http://launchpadlibrarian.net/161583928/ruby2.0_2.0.0.353-1build1_2.0.0.353-1ubuntu1.diff.gz -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org