From 5adfe2d66893f7bd1c587e7572678ce63ca91deb Mon Sep 17 00:00:00 2001
From: Rudi Grinberg <rudi.grinberg@gmail.com>
Date: Mon, 15 May 2017 05:30:02 -0400
Subject: [PATCH] Ignore local switch directory (#77)

This makes jbuilder usable for building projects that use a local switch
---
 src/file_tree.ml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/file_tree.ml b/src/file_tree.ml
index a9ef5a14..0033bc41 100644
--- a/src/file_tree.ml
+++ b/src/file_tree.ml
@@ -37,6 +37,7 @@ let root t = t.root
 
 let ignore_file = function
   | ""
+  | "_opam"
   | "_build"
   | ".git"
   | ".hg"