Thanks for the prompt response!
❯ brew search mariadb
==> Formulae
mariadb ✔ mariadb@10.1 mariadb@10.4
mariadb-connector-c ✔ mariadb@10.2 mariadb@10.5
mariadb-connector-odbc mariadb@10.3 qt-mariadb
==> Casks
navicat-for-mariadb
~/git/ocaml-caqti master
Looks like i have the mariadb and mariadb-connector-c. I have unlinked them and relinked them as well.
dune-workspace.dev seems tested for 4.12.0 and not 4.12.1. Dont know if that matters.
(lang dune 1.2)
(context (opam (switch 4.12.0)))
(context (opam (switch 4.09.0)))
(context (opam (switch 4.08.1)))
; Earlier OCaml switches will fail to build caqti-driver-postgresql due to
; the version constraint on postgresql >=5.0.0; other packages should work
; down to 4.04.
(context (opam (switch 4.06.1)))
(context (opam (switch 4.05.0)))
(context (opam (switch 4.04.2)))