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Re: [XEN PATCH 1/4] automation: Remove clang-8 from Debian unstable container
- To: anthony.perard@xxxxxxxxx
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Wed, 15 Feb 2023 18:15:19 +0000
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Doug Goldstein <cardoe@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Wed, 15 Feb 2023 18:16:02 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15/02/2023 4:31 pm, Andrew Cooper wrote:
> On 15/02/2023 4:28 pm, Anthony PERARD wrote:
>> On Wed, Feb 15, 2023 at 12:26:40PM +0000, Andrew Cooper wrote:
>>> On 15/02/2023 12:02 pm, Anthony PERARD wrote:
>>>> First, apt complain that it isn't the right way to add keys anymore,
>>>> but hopefully that's just a warning.
>>>>
>>>> Second, we can't install clang-8:
>>>> The following packages have unmet dependencies:
>>>> clang-8 : Depends: libstdc++-8-dev but it is not installable
>>>> Depends: libgcc-8-dev but it is not installable
>>>> Depends: libobjc-8-dev but it is not installable
>>>> Recommends: llvm-8-dev but it is not going to be installed
>>>> Recommends: libomp-8-dev but it is not going to be installed
>>>> libllvm8 : Depends: libffi7 (>= 3.3~20180313) but it is not installable
>>>> E: Unable to correct problems, you have held broken packages.
>>>>
>>>> clang on Debian unstable is now version 14.0.6.
>>>>
>>>> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
>>> Yeah that's because clang 8 is way obsolete, and http://apt.llvm.org
>>> only supports Clang 15 and later now.
>>>
>>> In hindsight, it was a mistake to take unstable-llvm-8.list in the first
>>> place.
>>>
>>> Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> I just realize that this change is going to break gitlab testing in the
>> staging-4* branches. So I guess this mean that we will have to backport
>> this patch, or at least the gitlab-ci part.
> I don't think it will. The currently cached container is still "good"
> for the older branches to use, but we ought to backport the change
> nevertheless.
>
> Given that the container is un(re)buildable anyway, we're not losing
> anything, I don't think.
Ah, so. Applying just this patch won't break older trees.
But applying this patch, and patch 3, then rebuilding the the debian
unstable container will break older branches, because there will no
longer be anything called clang-8 in the container.
This demonstrates even more that referencing the compiler by exact
version is a mistake. As is using names like unstable.
As I said up front when we added CI of this form, we were always going
to retrofit some changes to all branches (including the security-only
branches) to keep this working. These chicken are coming back to roost.
~Andrew
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