[Koha] Yaz V. 4

Hi to all there are new version of yaz 4.0 is it compatible to using with koha , the problem facing me in install this module Net::Z3950:: , couse this module requires V. yaz 3.0 so when i going to install it 's give me this will not install .. :) any body know why ? :)) Notes : Ubuntu V.10.04 thank's