From 4ba4d45e309e609d8e2b1bc41b8695b75d3a2579 Mon Sep 17 00:00:00 2001
From: Martin Konicek <mkonicek@fb.com>
Date: Mon, 5 Dec 2016 06:11:39 -0800
Subject: [PATCH] Fix a bug in determining if yarn is available

Reviewed By: mkonicek

Differential Revision:
D4276707
Ninja: OSS

fbshipit-source-id: 79cb2942f27179681d1a8ebfd3bc5a97f544f7af