if suggested package is not latest possible version, ensure version increase is safe

1 files changed, 10 insertions, 0 deletions

diff --git a/mgagnome b/mgagnome
index 4aad7ea..de13bb2 100755
--- a/mgagnome
+++ b/mgagnome
@@ -662,7 +662,17 @@ class Downstream(object):
             return matches
 
         # Return all packages reflecting the version before the current version
+        # - determine the newest version in any spec file
+        latest_possible_version = get_latest_version(packages.values())
+        # - now get the latest version before the current version
         latest_version = get_latest_version(packages.values(), max_version=version)
+        # - if the latest_possible_spec version is not the latest version, then
+        #   ensure it follows get_safe_max_version
+        if latest_version != latest_possible_version and version_cmp(get_safe_max_version(latest_version, upstream), \
+                version):
+            raise ValueError("Multiple packages found and unsafe version increase: %s (%s => %s)" % (upstream, latest_version, version))
+
+        # - now really get the right packages
         matches = [package for package in packages if packages[package] == latest_version]
         if len(matches):
             return matches