emacs-reason-ocaml

A simple setup for people who want to use ReasonML and OCaml with Emacs

This is supposed to be a simple Emacs configuration file to be mixed with your own. The only liberties I took was in using helm, flycheck-support (via flycheck-ocaml) and adding S-Expression syntax highlighting to make editing .elisp files easier. helm and flycheck-ocaml are not required for this project to work.

steps to follow

1. Install reason-cli
2. Install OCaml via your package manager (sudo apt-get install opam)
3. Install what you need (opam switch 4.06.1 && opam install merlin ocp-indent)
4. Rename your .emacs.d folder to something like emacs-backup
5. Run git clone https://github.com/kuwze/emacs-reason-ocaml.git ~/.emacs.d
6. Start Emacs
7. It should automatically download the current versions of the dependent libraries
8. When it comes to the .merlin file (which is required for merlin to work) you either write you own (if you are doing OCaml) or have the bucklescript compiler generate one for you (the example bsconfig.json below will auto generate one for you).

tree example-reasonml-application

├── bsconfig.json
├── reasonml
│   ├── File1.bs.js
│   ├── File2.bs.js
│   ├── File1.re
│   └── File2.re
├── .merlin // this is autogenerated for you by bsb via your `bsconfig.json` at the start of the tree

cat bsconfig.json

{
    "name": "example-reasonml-application",
    "generate-merlin": true,
    "namespace": true,
    "reason": {
	"react-jsx": 2
    },
    "bsc-flags": ["-bs-super-errors"],
    "bs-dependencies": ["reason-react"],
    "sources": [
	{
	    "dir": "./reasonml",
	    "subdirs": true
	}
    ],
    "refmt": 3,
    "package-specs": {
	"module": "es6-global",
	"in-source": true
    },
    "js-post-build": {
	"cmd": "prettier --write"
    },
    "suffix": ".bs.js"
}