dune

;; `dirs` is a stanza to tell dune which subfolders from the current folder
;; (where the `dune` file is) it should process.
;; `:standard` is part of Dune's predicate language: https://dune.readthedocs.io/en/stable/reference/predicate-language.html#predicate-language
;; In the case of `dirs` stanza, `:standard` means "Process all subdirs, except those starting with underscore"
;; `\` operator will exclude the next value defined set.

;; With that in mind, we start by ignoring `node_modules`, because in most cases
;; there should be no `dune` files to be processed there by Dune.
;; If you need to consume an OCaml project from `node_modules`, this should work:
;; - remove the `dirs` stanza below
;; - add a `(subdir node_modules (dirs only_your_package))`
(dirs :standard \ node_modules)