[Catalyst] [RFC] Catalyst::ConfigLoader -- load a config from various formats

[Brandon Black]

On 1/27/06, Matthew Lawrence <matthew.lawrence at ehsbrann.com> wrote:
> Brandon Black wrote:
> > On 1/26/06, Perrin Harkins <perrin at elem.com> wrote:
> >
> >>On Thu, 2006-01-26 at 18:12 +0000, Matt S Trout wrote:
> >>
> >>>I don't always have the luxury of being the only person running code on
> >>>a given server.
> >>
> >>There are many ways to do it.  The odds that any two large perl apps
> >>will require conflicting versions of a certain module are pretty high,
> >>so most people find a way to deal with this if they have multiple apps
> >>developed with different frameworks.  Many corporate environments (e.g.
> >>Morgan Stanley) develop configuration management systems for handling
> >>this.
> >>
> >
> >
> > Until such a framework ships for the rest of us, as something that all
> > perl installations and modules know about, it's not feasible in the
> > general case for a large framework being published to the world for
> > use on random hosts that don't have such a configuration management
> > system.
> >
> > It could be fixed by p5p with a rather invasive change to allow
> > multiple versions of a module to be installed simultaneously in
> > versioned subdirectories, with "use", "require", etc picking up the
> > latest available normally, but also allowing "I want exactly version
> > X" to work.  And from there it's trivial to use module-building tools
> > that use exact dependencies where neccesary instead of "at least X"
> > dependencies.  lib/ would get a bit polluted with unneccesary old
> > versions over time, but there's not a lot of clean ways to clean those
> > up (user scripts in someone's home directory might be the only ones
> > left still using old version X of some module).
> >
>
> Ironically enough, Ingy has a module that might help here:
>
> http://search.cpan.org/~ingy/only-0.28/lib/only.pm
>
> See specifically INSTALLING MULTIPLE MODULE VERSIONS.
>
> Matt
>

That is a rather interesting module :)

-- Brandon