[oe] [Bitbake-dev] RFC: How to improve packaged-staging and setscene

[Frans Meulenbroeks]

2010/8/5 Richard Purdie <rpurdie at rpsys.net>:
> On Thu, 2010-08-05 at 13:12 +0200, Frans Meulenbroeks wrote:
>> Sounds good to me. Not sure whether I have time to try it out on short
>> term. Too much other things at hand.
>>
>> One small concern:
>> Would it in your proposal be possible to disable packaged staging?
>> I think it would be nice if a user (in local.conf or so) could decide
>> on whether he wants to spent build time and space on this.
>
> Technically, disabling would be possible but you lose some important
> benefits such as when enabled, cleaning a package will remove whatever
> it put into staging.

Ah ok, that is a benefit I would not like to give up.
>
> One of our problems in OE is too many code paths. I'd like to see us try
> and minimise that problem. Disk space is cheap and this code shouldn't
> take much more time.

Space is less of an issue than time. An additonal task does consume
some time, if only to get started

>
> Once combined with checksums, it should actually save people large
> amounts of time as needing to rebuild from scratch should be a think of
> the patch (unless you make a change effecting everything in which case
> you'd expect it).

Well one of the scenario's I was thinking of when I had this in mind
was an autobuilder which builds images from scratch for verification
purposes.

But I understand your concern about paths. Indeed currently there are
sometimes unexpected side effects

Frans