=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for pdf-reader-2.4.2.gem
=> Checksum RMD160 OK for pdf-reader-2.4.2.gem
=> Checksum SHA512 OK for pdf-reader-2.4.2.gem
===> Installing dependencies for ruby27-pdf-reader-2.4.2
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby27-Ascii85>=1.0.0: found ruby27-Ascii85-1.1.0
=> Full dependency ruby27-rc4>=0: found ruby27-rc4-0.1.5
=> Full dependency ruby27-hashery>=2.0<3: found ruby27-hashery-2.1.2
=> Full dependency ruby27-afm>=0.2.1<0.3: found ruby27-afm-0.2.2
=> Full dependency ruby27-ttfunk>=0: found ruby27-ttfunk-1.7.0
=> 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/print/ruby-pdf-reader