=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for gappa-1.3.5.tar.gz
=> Checksum SHA512 OK for gappa-1.3.5.tar.gz
===> Installing dependencies for gappa-1.3.5
=> Tool dependency mktools-[0-9]*: found mktools-20220614
=> Tool dependency cwrappers>=20150314: found cwrappers-20220403
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency boost-headers-1.81.*: NOT found
=> Verifying /nonexistent for ../../devel/boost-headers
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /amd/pkgsrc/CHROOT/P/pkgsrc/devel/boost-headers
*** Error code 2

Stop.
make: stopped in /amd/pkgsrc/CHROOT/P/pkgsrc/math/gappa