Installation of package manager
brew install gpatch brew install opam
Installation of Ocaml
# environment setup opam init # put the shel in the right step eval $(opam env) # install given version of the compiler opam switch create 4.12.0 eval $(opam env) # check you got what you want which ocaml ocaml -version
So now you can start a repl and play around it
let rec fib n = if n < 2 then n else fib (n - 1) + fib (n - 2);;
On Linux and macOS, this will be the ~/.opam directory, which means you don't need administrative privileges to configure it. If you run into problems configuring opam, just delete the whole ~/.opam directory and start over.