From 6e695771dab3b593ee587089ff2985c8de931c5b Mon Sep 17 00:00:00 2001
From: Athan Clark <athan.clark@gmail.com>
Date: Thu, 28 May 2015 18:56:07 -0600
Subject: [PATCH] some "useful" combinators

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 574962ca..55a6a6c8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -983,6 +983,7 @@ packages:
         - urlpath
         - markup
         - webpage
+        - composition-extra
 
     "Fumiaki Kinoshita <fumiexcel@gmail.com> @fumieval":
         - control-bool