From ed8060abe0e8203fd39dc268f218346ce97b7c53 Mon Sep 17 00:00:00 2001
From: "Adam J. Stewart" <ajstewart426@gmail.com>
Date: Thu, 8 Dec 2016 11:37:18 -0600
Subject: [PATCH] Scotch fails to build with latest flex (#2523)

---
 var/spack/repos/builtin/packages/scotch/package.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/var/spack/repos/builtin/packages/scotch/package.py b/var/spack/repos/builtin/packages/scotch/package.py
index 58bbcd8383..9673fba5e2 100644
--- a/var/spack/repos/builtin/packages/scotch/package.py
+++ b/var/spack/repos/builtin/packages/scotch/package.py
@@ -50,7 +50,7 @@ class Scotch(Package):
     variant('metis', default=True,
             description='Build metis and parmetis wrapper libraries')
 
-    depends_on('flex', type='build')
+    depends_on('flex@:2.6.1', type='build')
     depends_on('bison', type='build')
     depends_on('mpi', when='+mpi')
     depends_on('zlib', when='+compression')
-- 
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