OCaml esy project

A project which demonstrates an OCaml workflow with esy.

esy is an overlay on top of package.json based package managers, that enables package.json packages to use compilers and environments quickly, and easily.

Installation

You can install the beta using npm install -g.

npm install -g git://github.com/jordwalke/esy.git#beta-v0.0.2

WARNING: Only npm is supported right now (not yarn, pnpm, or ied). This restriction is temporary and will be lifted in the future.

Build

% esy build

Clean build artifcats

% esy clean

Shell into build environment

% esy shell

Run preconfigured OCaml REPL

% esy repl

Merlin

Merlin integration is included. If your editor of choice has Merlin plugin/extension then you can run:

% esy $EDITOR

and start using it ($EDITOR env var must point to your editor of choice).

Merlin + Vim

This project also builds the Merlin IDE plugin as a dependency, which includes Vim support. To enable it install the tiny Vim plugin which will load Merlin's Vim support from the environment, by putting this in your .vimrc.

" If using NeoBundle(recommended)
NeoBundle 'reasonml/vim-reason-loader'

" Using Vundle
Bundle 'reasonml/vim-reason-loader'

Then whenever starting Vim inside the project's esy environment, that vim plugin will automatically load the actual Merlin plugin.

% esy vim

% # Or
% esy $EDITOR