contains only static libraries,
but no virtual -static package is provided
This is normal packaging procedure for ocaml packages. If you want that addressed, take it up with the ocaml SIG, then reopen this bug or file a new one once they've sorted out what they want to do and have their approach implemented.
Yes, see packaging list where I've asked about Haskell, OCaml and other exceptions. I'm automating these tests, so the occasional false positive is only temporary. ;)