So, once this PR is merged, to have your source be displayed in the docs, you need to install the .ml corresponding to your compilation units in order to have source rendered in the ocaml.org website!
I think this should be added to the documentation, with more details. I’ll open an issue.
(Note that I often end up in my opam switch by following merlin, and sometimes I use the installed source to look up for examples or other info on the API. This is not possible for packages which do not install source, which is not bad enough for me to open an issue. But I would be happy if your packages do install sources!)