From 7f224b616de2ecbf2df645dcdf58efd2a3a0be9a Mon Sep 17 00:00:00 2001
From: Peter Josef Scheibel <scheibel1@llnl.gov>
Date: Fri, 18 May 2018 16:25:09 -0700
Subject: specs: _concrete should never be cleared when copying Specs

---
 lib/spack/spack/spec.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index 39dad67d2c..de00a3dd5b 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -2709,17 +2709,17 @@ class Spec(object):
                 deptypes = deps
             self._dup_deps(other, deptypes, caches)
 
+        self._concrete = other._concrete
+
         if caches:
             self._hash = other._hash
             self._cmp_key_cache = other._cmp_key_cache
             self._normal = other._normal
-            self._concrete = other._concrete
             self._full_hash = other._full_hash
         else:
             self._hash = None
             self._cmp_key_cache = None
             self._normal = False
-            self._concrete = False
             self._full_hash = None
 
         return changed
-- 
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