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Re^3: What's the best way to use Any YAML (not YAML::Any)

by CountZero (Bishop)
on Mar 17, 2014 at 19:35 UTC ( #1078671=note: print w/replies, xml ) Need Help??

in reply to Re^2: What's the best way to use Any YAML (not YAML::Any)
in thread What's the best way to use Any YAML (not YAML::Any)

Does your application only rely on CORE modules? If not, you will have to assume that those non-CORE modules are installed with the users anyhow or they know how to install them. Little extra effort to install *some* YAML module too.


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Re^4: What's the best way to use Any YAML (not YAML::Any)
by djerius (Beadle) on Mar 18, 2014 at 01:27 UTC
    This particular distribution does depend upon non-CORE modules, but the YAML support is optional (which apparantly I haven't stated).

    I don't think that requiring installation of a particular package when an adequate alternative is already installed is a satisfying solution. I haven't attempted to code such a requirement into Makefile.PL (or cpanfile) and see how the various CPAN clients handle it. I should probably do so.

    The run-time code would still need to select amongst the installed packages, so the original question woould still be cogent.

    I wonder if some sort of capabilities database would be of help here. Modules providing capabilities would be registered upon installation. At run time the database would be queried to determine which modules were available; if one hadn't been loaded, one would be.

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