Re: [bitbake-devel][PATCH V2] lib/bb/parse/ast.py: error out for internal fragment in case of a previous value

[ChenQi <Qi.Chen@windriver.com>]

On 11/14/25 15:12, Chen Qi via lists.openembedded.org wrote:
> On 11/14/25 14:49, Alexander Kanavin wrote:
>> On Fri, 14 Nov 2025 at 07:37, ChenQi <Qi.Chen@windriver.com> wrote:
>>> When machine/qemux86-64 fragment is enabled and users use 'MACHINE=xxx
>>> bitbake <pkg>', the expected behavior is to error out and recommend 
>>> user
>>> to use 'bitbake-config-build disable-fragment'.
>>>
>>> Here comes the problem. bitbake-config-build makes use of tinfoil and
>>> when setting up tinfoil, the above error will appear again. We can't
>>> recommend users to use 'bitbake-config-build disable-fragment' while 
>>> the
>>> recommended method still errors out. This is the reason for the special
>>> exception.
>> But why would users be running 'MACHINE=xxx bitbake-config-build
>> disable-fragment ...' ? That prefix is intended only for bitbake
>> invocations.
>>
>> Alex
>
Hi Alex,

Ignore the reply below. Sorry, I just realized what's going on here.

I was using 'MACHINE ="qemuarm64"' in local.conf to test things.

So the error will appear again and again even with a simple 
'bitbake-config-build --help' if there's no such special exception.

Regards,
Qi

> I mean that users run something like 'MACHINE=qemuarm64 bitbake 
> base-files', and they get error like below:
>
> ERROR: A builtin fragment 'machine/qemux86-64' is used while MACHINE 
> has already got an assignment.
> Please either disable the fragment or remove the value assignment.
> To disable the fragment, use 'bitbake-config-build disable-fragment 
> machine/qemux86-64'.
>
> Now they run 'bitbake-config-build disable-fragment 
> machine/qemux86-64' as recommended. If there's no such special 
> exception, they will get the same error again. Even if they run a 
> simple 'bitbake-config-build --help', they'll get the same error again.
>
> That's the reason for this special exception.
>
> Regards,
> Qi
>
>
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