being able to pipe dune through opam would be cool – write human stuff to stderr and opam input to stdout. And then run e.g. $ dune runtest | opam dune and

being able to pipe dune through opam would be cool – write human stuff to stderr and opam input to stdout. And then run e.g. $ dune runtest | opam dune and opam would have to agree on how to talk with each other, however.