=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for sass-rails-6.0.0.gem
=> Checksum RMD160 OK for sass-rails-6.0.0.gem
=> Checksum SHA512 OK for sass-rails-6.0.0.gem
===> Installing dependencies for ruby25-sass-rails-6.0.0
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby25-sassc-rails>=2.1.1: found ruby25-sassc-rails-2.1.2
=> Full dependency ruby25-base>=2.5.8: NOT found
=> Verifying /nonexistent for ../../lang/ruby25-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby25-base
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/www/ruby-sass-rails