ocaml

Set up a reproducible OCaml stack by creating an opam switch, installing dune, merlin, and optionally ocamlformat, then initializing a dune-project. This configures dependency management, build automation, editor integration, and formatting in one workflow across local and CI environments.

opam manages OCaml compiler versions and dependencies; dune handles project builds and tests; merlin provides real-time editor support and type information; ocamlformat standardizes code style. Together they form a complete development toolchain.

Yes. Dune and merlin work together: dune orchestrates builds and tests while merlin provides live editor features like type checking, completion, and navigation. Installing both enables seamless editor integration within dune-based workflows.

After creating an opam switch and installing dune, initialize a dune-project in your repository, define library or executable stanzas in dune files, then run `dune build` to compile and `dune runtest` to execute tests.

ocamlformat is optional but recommended. It automates code formatting to maintain consistency across your codebase. You can skip it for minimal setups or integrate it into your dune workflow for automated formatting on every build.

With opam, dune, merlin, and ocamlformat configured, you can run builds, tests, REPL sessions via utop, editor-based development, and automated formatting both locally and in continuous integration pipelines identically.