Hi :)Looks like libjzlib-java has already been added to the build dependencies [1].
Note that jruby is affected by another FTBFS issue [2] which is marked as
pending. I believe once that is released, the package can be synced to Ubuntu. [1] https://anonscm.debian.org/cgit/pkg-java/jruby.git/tree/debian/control#n83 [2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=821181 -- mvh / best regards Hans Joachim Desserud http://desserud.org