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https://issues.apache.org/jira/browse/CLOWNFISH-70?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Wellnhofer updated CLOWNFISH-70:
-------------------------------------
Fix Version/s: 0.5.0
> Export major version from Perl bindings
> ---------------------------------------
>
> Key: CLOWNFISH-70
> URL: https://issues.apache.org/jira/browse/CLOWNFISH-70
> Project: Apache Lucy-Clownfish
> Issue Type: Improvement
> Components: Perl
> Reporter: Nick Wellnhofer
> Assignee: Nick Wellnhofer
> Fix For: 0.5.0
>
>
> The Perl bindings for a Clownfish parcel should export the major version, so
> dependent parcels can die with a meaningful error message if they find a
> newer and incompatible major version.
> For now, I'd propose to implement a manual check. In Clownfish.pm, we could
> have something like:
> {noformat}
> our $MAJOR_VERSION = 0.005000;
> {noformat}
> And in a dependent parcel like Lucy, something like:
> {noformat}
> use Clownfish 0.005000;
> BEGIN {
> die <<"EOF" if $Clownfish::MAJOR_VERSION > 0.005000;
> This version of Lucy doesn't support Clownfish $Clownfish::MAJOR_VERSION or
> higher.
> You should downgrade Clownfish or, if possible, upgrade Lucy.
> EOF
> }
> {noformat}
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