=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for screengif-0.0.3.gem
=> Checksum RMD160 OK for screengif-0.0.3.gem
=> Checksum SHA512 OK for screengif-0.0.3.gem
===> Installing dependencies for ruby24-screengif-0.0.3nb2
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.6.0
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ffmpeg4-[0-9]*: found ffmpeg4-4.2.2nb4
=> Full dependency gifsicle-[0-9]*: found gifsicle-1.92
=> Full dependency ruby24-RMagick-[0-9]*: found ruby24-RMagick-4.1.0
=> Full dependency ruby24-base>=2.4.10: NOT found
=> Verifying /nonexistent for ../../lang/ruby24-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby24-base
*** Error code 2

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