From tht YAML pod:
This module has been released to CPAN as YAML::Old, and soon YAML.pm will be changed to just be a frontend interface module for all the various Perl YAML implementation modules, including YAML::Old.
If you want robust and fast YAML processing using the normal Dump/Load API, please consider switching to YAML::XS. It is by far the best Perl module for YAML at this time. It requires that you have a C compiler, since it is written in C.
Try some place where YAML::XS is not used and confirm that it works
QA note: This patch removes some uses of YAML that were not useful
Signed-off-by: Kyle M Hall <firstname.lastname@example.org>
Signed-off-by: Joonas Kylmälä <email@example.com>
Signed-off-by: Jonathan Druart <firstname.lastname@example.org>