Many libraries that define abstract types also define printers. When using such libraries in the toplevel, it's convenient to install these printers using #install_printer. One way to do that is to define a module that plugs the printers in the toplevel and then add an ocamlfind directive.

The current way is very brittle (in particular, it wouldn't work if it was an ocamlfind sublibrary ...) and not extremely intuitive. It also doesn't work with jbuilder utop. It would be nice to have something a bit more integrated.