MetaOCaml error: Error: Reference to undefined global `Trx'

Ecosystem
1

I installed MetaOCaml like so:

opam update
opam switch 4.04.0+BER
eval ‘opam config env‘

In the REPL:

$ ocaml
OCaml version 4.04.0

# let c = .<1 + 2>.;;
Error: Reference to undefined global `Trx’

Any idea what that means?

2

Running the metaocaml (rather than ocaml) top level should fix this.

3

Oh, I see. So it’s not possible to use utop then?

4

Yes, you can! Use metaocaml in utop via utop-full!