Bug#1050071: llvm-defaults: move to 16

[Timo Aaltonen]

Simon McVittie kirjoitti 11.9.2023 klo 12.36:
> On Sat, 19 Aug 2023 at 10:39:44 +0200, Sylvestre Ledru wrote:
>> llvm-defaults has been pointing to 16 in experimental for quite sometime.
>> Opening this transition to make sure it is on your radar! :)
>>
>> I opened bug #1050070 & #1050069 for future removals.
> 
> Mesa is a significant user of LLVM, and hard-codes its own non-default
> version of LLVM which often runs ahead of the default (currently 15).
> It seems to be relatively common for a LLVM version upgrade to cause
> regressions or uninstallability on at least one architecture, and also
> relatively common for a LLVM version upgrade to be necessary to unblock
> features or bug fixes in Mesa, which I assume is why the Mesa maintainers
> have felt the need to control this themselves.
> 
> Should Mesa try moving to -16 *before* the default changes? It would
> seem unhelpful to move the rest of the distribution to a version that
> Mesa can't use for whatever reason.
> 
> I've opened a Mesa bug at wishlist severity suggesting a move to version
> 16, and set it to block the bug for llvm-toolchain-15 removal (#1050070).
> 
>      smcv
> 

Hi,

The remaining blocker for this is that using llvm-16 requires a newer 
bindgen, and the latest upstream version split the cli separate, so that 
needs to be packaged (has been done AIUI) and processed through NEW 
first, see:

https://salsa.debian.org/rust-team/debcargo-conf/-/issues/50


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