=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for kegs.0.91.tar.gz
=> Checksum RMD160 OK for kegs.0.91.tar.gz
===> Installing dependencies for kegs-0.91nb1
=> Tool dependency gmake>=3.81: found gmake-3.82nb6
=> Tool dependency perl>=5.0: found perl-5.16.3
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for kegs-0.91nb1
===> Extracting for kegs-0.91nb1
===> Patching for kegs-0.91nb1
=> Applying pkgsrc patches for kegs-0.91nb1
===> Creating toolchain wrappers for kegs-0.91nb1
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/emulators/kegs
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/emulators/kegs