[OE-core] lib/oe/sstatesig: Ensure packagegroups don't continually rebuild

[Otavio Salvador]

On Thu, Nov 7, 2013 at 8:57 PM, Richard Purdie
<richard.purdie at linuxfoundation.org> wrote:
> On Thu, 2013-11-07 at 13:58 -0200, Otavio Salvador wrote:
>> On Wed, Nov 6, 2013 at 9:42 PM, Richard Purdie
>> <richard.purdie at linuxfoundation.org> wrote:
>> > On Wed, 2013-11-06 at 16:51 -0200, Otavio Salvador wrote:
>> >> On Tue, Nov 5, 2013 at 8:15 PM, Richard Purdie
>> >> <richard.purdie at linuxfoundation.org> wrote:
>> >> > packagegroups are allarch and shouldn't change depending on the target
>> >> > or machine selected. In general they should have good stable namespaces
>> >> > for their dependencies. As such we can exclude them from rebuilding when
>> >> > dependency checksums change.
>> >> >
>> >> > Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
>> >>
>> >> What about machine-base and core-boot? this may change depending on machine.
>> >
>> > Those already get marked as machine specific. I'd not expect
>> > dependencies to be changing package names there for example so I'm not
>> > sure this is an issue.
>>
>> In:
>>
>> +    def isPackageGroup(fn):
>> +        inherits = " ".join(dataCache.inherits[fn])
>> +        return "packagegroup.bbclass" in inherits
>>
>> We must check PACKAGE_ARCH, no?
>
> No. The fact they're marked as MACHINE_ARCH ensures they change when
> they need to, we don't need sstate to do that as well.

Fine :)

-- 
Otavio Salvador                             O.S. Systems
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