[Module::Build] yaml_dump on version objects

[John P. <jpe...@ro...>]

Dear Perl YAML-heads:

I've been trying to integrate version objects into Module::Build (now 
that I have a pure Perl release) and everything works except that YAML 
emits lots of warnings when trying to dump version objects:

Use of uninitialized value in hash element at 
/usr/lib/perl5/site_perl/5.8.7/YAML.pm line 283.
Use of uninitialized value in string eq at 
/usr/lib/perl5/site_perl/5.8.7/YAML.pm line 291.
...blah...blah...blah...
--- !perl/YAML::Warning
code: YAML_DUMP_WARN_BAD_NODE_TYPE
msg: "Can't perform serialization for node type "
...

I've tried to implement a yaml_dump() sub in the class, but I cannot 
figure out how to use it (the commented out Bless line just croaks). 
I've attached my example code (which requires version).

TIA

John

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John Peacock
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