WARNING: [license.mk] Every package should define a LICENSE.
===> Installing dependencies for nbpatch-20151107
=> Build dependency cwrappers>=20150314: NOT found
=> Verifying /nonexistent for ../../pkgtools/cwrappers
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /tree/pkgsrc/pkgtools/cwrappers
*** Error code 2

Stop.
make: stopped in /tree/pkgsrc/devel/nbpatch