Pierre Neidhardt <mail@ambrevar.xyz> writes:

> Christopher Baines <mail@cbaines.net> writes:
>
>>> Hmm, but this data relates to items in the store and online, they are
>>> global.  Per-user would mean redundant packages and redundant (remote) queries.
>>
>> Yeah, maybe there's some way of optimising things for systems with
>> multiple users.
>
> Note: I meant "redundant database", not "packages".
>
> Can you think of good reasons not to store it globally in /var?

Not specifically, it just becomes more complex as you have to consider
more issues. Like the mundane "what if one user is using a file, and
another deletes it" to the more unusual "what if you can modify the file
to crash or exploit processes run by other users".