[Zope-CMF] Re: [dev] RFC: rethinking GenericSetup extension profiles

2006-07-26 Thread yuppie

Hi Lennart!


Lennart Regebro wrote:

I don't exactly understand what makes a customization snapshot
different from an extension profile,


You can't understand what is different because there is no difference ;)


except that you note what profile it is diffed from.


Even this small difference doesn't exist. The profile it is diffed from 
is just a normal dependency.



Cheers,

Yuppie

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[Zope-CMF] Re: [dev] RFC: rethinking GenericSetup extension profiles

2006-07-26 Thread Tres Seaver
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Lennart Regebro wrote:
 I don't exactly understand what makes a customization snapshot
 different from an extension profile, except that you note what
 profile it is diffed from.
 
 Other than that, I think this proposal sounds good.

I'll note that my original architecture document[1] contemplated two
kinds of add-on profiles:

  - ExtensionProfiles could register *new* kinds of steps, as well as
making non-destructive insertions to the configuration created by a
baseline profile.

  - DeltaProfiles essentially captured line-level diffs to a baseline
profile.

I think there is room for both, where we get away from the need to make
EPs the current profile in order to use them.  DeltaProfiles could be
applied by patching a snapshot, and then installing the snapshot as a
new baseline.

Because not all the files being patched are XML, I don't think we can or
should rely on XSLT:  diff might be enough.


Tres.
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