=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for airbrussh-1.4.0.gem
=> Checksum RMD160 OK for airbrussh-1.4.0.gem
=> Checksum SHA512 OK for airbrussh-1.4.0.gem
===> Installing dependencies for ruby26-airbrussh-1.4.0
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby26-sshkit>=1.9.0: found ruby26-sshkit-1.21.2
=> Full dependency ruby26-base>=2.6.7: NOT found
=> Verifying /nonexistent for ../../lang/ruby26-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby26-base
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/security/ruby-airbrussh