constraints file support for devstack.
Constraints files allow a global view of dependencies for devstack
without the side effect that requirements files have of installing
everything everytime. This is part of the cross project
requirements-management spec.
Change-Id: If089d30146629e6cf817edd634e5c2b80f1366dd
diff --git a/stackrc b/stackrc
index f2aafe9..e76abc0 100644
--- a/stackrc
+++ b/stackrc
@@ -149,6 +149,12 @@
# Zero disables timeouts
GIT_TIMEOUT=${GIT_TIMEOUT:-0}
+# Constraints mode
+# - False (default) : update git projects dependencies from global-requirements.
+#
+# - True : use upper-constraints.txt to constrain versions of packages intalled
+# and do not edit projects at all.
+USE_CONSTRAINTS=${USE_CONSTRAINTS:-False}
# Repositories
# ------------