[Python-Dev] PEP 376 proposed changes for basic plugins support

[Steve Holden]

On 8/3/2010 12:33 PM, Glyph Lefkowitz wrote:
> 
> On Aug 3, 2010, at 4:28 AM, M.-A. Lemburg wrote:
> 
>> I don't think that's a problem: the SQLite database would be a cache
>> like e.g. a font cache or TCSH command cache, not a replacement of
>> the meta files stored in directories.
>>
>> Such a database would solve many things at once: faster access to
>> the meta-data of installed packages, fewer I/O calls during startup,
>> more flexible ways of doing queries on the meta-data, needed for
>> introspection and discovery, etc.
> 
> This is exactly what Twisted already does with its plugin cache, and the
> previously-cited ticket in this thread should expand the types of
> metadata which can be obtained about plugins.
> +1
> Packaging systems are perfectly capable of generating and updating such
> metadata caches, but various packages of Twisted (Debian's especially)
> didn't read our documentation and kept moving around the place where
> Python source files were installed, which routinely broke the
> post-installation hooks and caused all kinds of problems.
> 
> I would strongly recommend looping in the Python packaging teams from
> various distros *before* adding another such cache, unless you want to
> be fielding bugs from Launchpad.net <http://Launchpad.net> for five
> years :).
> 
+1
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