=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for ruby-opengl-0.60.1.gem
=> Checksum RMD160 OK for ruby-opengl-0.60.1.gem
=> Checksum SHA512 OK for ruby-opengl-0.60.1.gem
===> Installing dependencies for ruby30-opengl-0.60.1nb4
=> Build dependency x11-links>=1.32: found x11-links-1.32
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby30-mkrf>=0.2.0: found ruby30-mkrf-0.2.3nb1
=> Full dependency ruby30-base>=3.0.1: NOT found
=> Verifying /nonexistent for ../../lang/ruby30-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby30-base
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/graphics/ruby-opengl