I have upgraded to ocaml 4.05 and am attempting to use
ppx_compare, ppx_hash and ppx_type_conv in
utop via the following command,
#use topfind;; #require "base";; #require "ppx_hash";;
However, I am getting the error below
No such package: ppx_deriving - required by `ppx_hash.deprecated-ppx-method'
ppx_deriving is of course not yet available for
4.05. However, I seem to be able to compile my project successfully without
ppx_deriving. I can load
toploop however, the ppx doesn’t seem to be working.
I am getting similar issues with
ppx_compare and ppx_type_conv. Is there some package(s) or some
toploop invocations that I am missing?