From bc0047de3c5630a0e92bb4954f0fafecea44efb6 Mon Sep 17 00:00:00 2001
From: Ryan Scott <ryan.gl.scott@gmail.com>
Date: Thu, 22 Dec 2016 10:31:53 -0500
Subject: [PATCH] Add echo

---
 build-constraints.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1c233db2..acca351a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1720,6 +1720,7 @@ packages:
         - base-orphans
         - code-page
         - deriving-compat
+        - echo
         - generic-deriving
         - hashmap
         - invariant