[Grok-dev] Re: the projects in progress

[Martijn Faassen]

Ethan Jucovy wrote:
[snip]
> I've been thinking about this a bit, partly because I frankly feel like 
> there's a bit too much magic if a package is included simply by virtue 
> of being installed, and partly because in development environments 
> (where I toggle plugins on and off frequently) having to disable an 
> installed package and later reinstall it ends up being quite a lot more 
> hassle than dealing with package-includes slug files.

I understood the entire goal of this exercise was to *have* this magic. 
  If you don't do this, you need to trigger the ZCML includes 
*somewhere*, and you can just as well do it in site.zcml instead of 
coming up with a new system.

Installing a plugin is after all an explicit statement in your 
buildout.cfg. (unless you just use easy_install. That is not the common 
modern way to deploy Plone though)

I think it is important to keep other possibilities in mind, such as 
register plugins so that someone with a UI can determine whether to load 
it up, etc. I think we shouldn't have to worry *too* much about them yet 
and just get the basics going:

* define an entry point where a plugin can register itself with the 
package it wants to plugin with

* add a ZCML statement that a package can use to load all known plugins.

If later we want packages that *don't* automatically load all plugins, 
this package won't be using the ZCML statement but will be doing 
something else. Let's keep z3c.autoinclude focused on ZCML for the time 
being though.

Regards,

Martijn