This is probably a base (cascading) profile error: >>> emerge (17 of 337) dev-java/jsch-0.1.15 to / >>> md5 src_uri ;-) jsch-0.1.15.zip >>> Unpacking source... >>> Unpacking jsch-0.1.15.zip to /var/tmp/portage/jsch-0.1.15/work /usr/lib/portage/bin/ebuild.sh: line 369: unzip: command not found!!! ERROR: dev-java/jsch-0.1.15 failed.!!! Function unpack, Line 369, Exitcode 127!!! failure unpacking jsch-0.1.15.zip!!! If you need support, post the topmost build error, NOT this status message. catalyst: GRP build aborting due to error.
unzip isn't in the base system. File bugs against individual packages that need unzip but don't have it in DEPEND.