=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Fetching duff-0.5.tar.gz
=> Total size: 12965 bytes
checksum: Checksum BLAKE2s mismatch for duff-0.5.tar.gz
ERROR: Make sure the Makefile and checksum file (/usr/pkgsrc/devel/ocaml-duff/distinfo)
ERROR: are up to date.  If you want to override this check, type
ERROR: "/usr/bin/make NO_CHECKSUM=yes [other args]".
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/devel/ocaml-duff