libhash-util-fieldhash-compat-perl 0.11-1.1 (amd64 binary) in ubuntu hirsute

 Hash::Util::FieldHash::Compat under older perls provides a drop in
 compatible API to Hash::Util::FieldHash using perltie. When
 Hash::Util::FieldHash is available it will use that instead.
 .
 This way code requiring field hashes can benefit from fast, robust field
 hashes on Perl 5.10 and newer, but still run on older perls that don't
 ship with that module.