Versioning caches in Plasma

[Harald Sitter]

On Fri, Mar 3, 2017 at 1:30 PM, Kai Uwe Broulik <kde at privat.broulik.de> wrote:
>> For binary packages of any sort the mtime would always be different, same for stuff from the kde store since that'd rm the old tree first (I am
> guessing).
>
> Different but not necessarily newer. I still recall the trouble we had when we did major theme changes in Plasma 4.10.
>
> When you install your machine with Plasma x and then update to Plasma y which was released before your install, the mtime in the package will be lower than the one of your local Plasma install causing havoc to your theme. At least that was my impression, so it's not as straightforward or reliable as you just described unfortunately.

That's just more addendum to the cleanup,

Either way, my point is that the files Aleix has should be caught in
the very first part of the cleanup heuristic: "are there files that
are associated with me but not the ones I want to store my cache in".

HS