=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for nss-3.107.tar.gz
=> Checksum SHA512 OK for nss-3.107.tar.gz
===> Installing dependencies for nss-3.107
=> Tool dependency mktools-[0-9]*: NOT found
=> Verifying /nonexistent for ../../pkgtools/mktools
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/pkgtools/mktools
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/devel/nss