[oe] any reason to not cache `opkg list`?

[AJ ONeal]

> root at quokka:~# time opkg list > /dev/null
> real    0m 2.78s
> user    0m 2.50s
> sys     0m 0.26s
>
> Ok, so its not the quickest. Opkg has to read in the package info and
> parse it each time.
>
> What is your use case for needing to call 'opkg list' so frequently
> that this becomes painful?
>

I often search for packages available in the Angstrom repo before
bitbake-ing my own with OE.

My gumstix overo I use like a regular development server.
It has a faster processor, but my results are much slower than yours.

time opkg list > /dev/null

real    0m5.206s
user    0m4.914s
sys    0m0.227s