=> 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 ruby27-screengif-0.0.3nb2
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.7.3
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ffmpeg4-[0-9]*: found ffmpeg4-4.3.2nb1
=> Full dependency gifsicle-[0-9]*: found gifsicle-1.92
=> Full dependency ruby27-RMagick-[0-9]*: found ruby27-RMagick-4.2.2
=> Full dependency ruby27-base>=2.7.3: NOT found
=> Verifying /nonexistent for ../../lang/ruby27-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby27-base
*** Error code 2

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