Package: libyaml-libyaml-perl Version: 0.902.0+ds-1 My reading of #1082612 in lintian is that the versioning change in YAML::XS had runtime effects other than warning (specifically skipping YAML processing).
If this is the case, libyaml-libyaml-perl should have a Breaks entry for lintian versions older than 2.119.0 to prevent broken combinations with partial upgrades. This would also help the testing migration machinery to figure out what to let through in which order. -- Niko Tyni nt...@debian.org