=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for bbdate-0.2.4.tar.gz
=> Checksum RMD160 OK for bbdate-0.2.4.tar.gz
===> Installing dependencies for bbdate-0.2.4nb1
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for bbdate-0.2.4nb1
===> Extracting for bbdate-0.2.4nb1
===> Patching for bbdate-0.2.4nb1
=> Applying pkgsrc patches for bbdate-0.2.4nb1
===> Creating toolchain wrappers for bbdate-0.2.4nb1
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/time/bbdate
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/time/bbdate