[Python-ideas] Add appdirs module to stdlib

Yury Selivanov yselivanov.ml at gmail.com
Tue Sep 1 23:25:26 CEST 2015

On 2015-09-01 5:22 PM, Nathaniel Smith wrote:
> All of this is probably as much an argument*for*  providing the correct
> functionality as a standard thing as it is against, but any PEP here
> probably needs to be thorough about citing the research to show that
> it's actually getting the various platform standards correct.
> What makes it particularly difficult is that if you "fix a bug" in a
> library like appdirs, so that it starts suddenly returning different
> results on some computer somewhere, then what it looks like to the end
> user is that their data/settings/whatever have suddenly evaporated and
> whatever disk space was being used for caches never gets cleaned up
> and so forth. Generally when applications change how they compute
> these directories, they also include tricky migration logic to check
> both the old and new names, move stuff over if needed, but I'm not
> sure how a low-level library like this can support that usefully...

+1 on all points.  We really need a PEP for this kind of
functionality in the standard library.


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