[Distutils] tracking requested vs dependency installs in PEP 376 metadata

[Chris Withers]

Ian Bicking wrote:
> I can imagine adding a little information, basically a log of when and 
> why and who installed the package.  For instance:
> 
>   agent: pip 0.5
>   install-date: 2009-10-08T13:44:00UTC
>   installed-for-user: False
>   installed-for-package: OtherPackage==0.3 

I think this is a great idea. Recording more information rather than 
less and making sure it's kept up to date is a good idea here. 
Otherwise, when tools come along later down the line that want to make 
use of this information, they'll have to hack something themselves, and 
that's what got setuptools into the mess it currently is in the first place!

Chris