This is some hacks I’ve done to get a Spacemacs layer around reason-mode found in the reason repo.

Clone this repo into ~/.emacs.d/private/reason. To use this configuration layer, add it to your ~/.spacemacs. You will need to add reason to the existing dotspacemacs-configuration-layers list in this file. Also make sure you have ocaml layer included, since reason uses Merlin (and only one layer can be in control of a package).

If you get the following at startup: An error occurred while post-configuring company in layer reason (error: (void-function spacemacs|add-company-backends))

The spacemacs|add-company-backend function is a recent addition in the develop branch; see https://github.com/syl20bnr/spacemacs/blob/develop/CHANGELOG.develop#breaking-changes and also syl20bnr/spacemacs@74fdbb6.