From ccd65895a63261b2c80a054ced8e29df50dcd25f Mon Sep 17 00:00:00 2001
From: Peter Josef Scheibel <scheibel1@llnl.gov>
Date: Fri, 7 Feb 2020 16:15:35 -0800
Subject: print out debug information about which specs are applying which
 constraints

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

(limited to 'lib')

diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index 8c3969b8c9..0b4e7dfacf 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -2584,6 +2584,8 @@ class Spec(object):
         else:
             # merge package/vdep information into spec
             try:
+                tty.debug(
+                    "{0} applying constraint {1}".format(self.name, str(dep)))
                 changed |= spec_deps[dep.name].constrain(dep)
             except spack.error.UnsatisfiableSpecError as e:
                 fmt = 'An unsatisfiable {0}'.format(e.constraint_type)
-- 
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