=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for em-websocket-0.5.2.gem
=> Checksum RMD160 OK for em-websocket-0.5.2.gem
=> Checksum SHA512 OK for em-websocket-0.5.2.gem
===> Installing dependencies for ruby26-em-websocket-0.5.2
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby26-eventmachine>=0.12.9: found ruby26-eventmachine-1.2.7nb1
=> Full dependency ruby26-http_parser.rb>=0.6.0<0.7: found ruby26-http_parser.rb-0.6.0
=> 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/www/ruby-em-websocket