ocaml-re - Library "seq" not found.

[ctreleaven (Craig Treleaven)]

I'm attempting to update the port for geneweb and it requires a new dependency that employs ocaml-re. The new dependency (jingoo)fails while building. I see the same failure if I try to execute ocaml-re's test phase. See attached log

--->  Building ocaml-re
DEBUG: Executing org.macports.build (ocaml-re)
DEBUG: Environment: 
CC_PRINT_OPTIONS='YES'
CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/_Users_craigtreleaven_mp_macports-ports_ocaml_ocaml-re/ocaml-re/work/.CC_PRINT_OPTIONS'
CPATH='/opt/local/include'
DEVELOPER_DIR='/Library/Developer/CommandLineTools'
LIBRARY_PATH='/opt/local/lib'
MACOSX_DEPLOYMENT_TARGET='10.15'
SDKROOT='/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk'
Executing:  cd "/opt/local/var/macports/build/_Users_craigtreleaven_mp_macports-ports_ocaml_ocaml-re/ocaml-re/work/ocaml-re-1.9.0" && /opt/local/bin/dune build -j 6 --root=/opt/local/var/macports/build/_Users_craigtreleaven_mp_macports-ports_ocaml_ocaml-re/ocaml-re/work/ocaml-re-1.9.0 --profile=release --ignore-promoted-rules --no-config --only-packages=re --default-target=@install @install 
DEBUG: system:  cd "/opt/local/var/macports/build/_Users_craigtreleaven_mp_macports-ports_ocaml_ocaml-re/ocaml-re/work/ocaml-re-1.9.0" && /opt/local/bin/dune build -j 6 --root=/opt/local/var/macports/build/_Users_craigtreleaven_mp_macports-ports_ocaml_ocaml-re/ocaml-re/work/ocaml-re-1.9.0 --profile=release --ignore-promoted-rules --no-config --only-packages=re --default-target=@install @install 
File "lib/dune", line 4, characters 12-15:
4 |  (libraries seq)
                ^^^
Error: Library "seq" not found.
-> required by library "re" in _build/default/lib
-> required by _build/default/META.re
-> required by _build/install/default/lib/re/META
-> required by _build/default/re.install
-> required by alias install

Note that livecheck reports a new version of ocaml-re is also available, 1.10.4.