From 6e4cb79a8f2736f898f6702bd9ea1d172b573afd Mon Sep 17 00:00:00 2001
From: Nathaniel Wesley Filardo <nwf@cs.jhu.edu>
Date: Sat, 1 Jun 2013 18:11:13 -0400
Subject: [PATCH] Detect missing alex and happy in make deps

---
 Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile b/Makefile
index a29d773..6945d0c 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,8 @@ upstream:
 	cabal install --user external/ekmett-parsers external/ekmett-trifecta 
 
 deps:
+	alex --version || cabal install alex
+	happy --version || cabal install happy
 	cabal install --user --enable-tests --only-dependencies .
 
 build:
-- 
2.50.1