Bug#1100981: libmlir-19 fails to coinstall

[Simon McVittie]

On Sun, 28 Sep 2025 at 08:23:32 +0200, Sebastiaan Couwenberg wrote:
>On Tue, 29 Apr 2025 10:34:07 +0100 Simon McVittie <smcv at debian.org> wrote:
>>This appears to have been fixed in the packaging team's git repo by:
>>https://salsa.debian.org/pkg-llvm-team/llvm-toolchain/-/merge_requests/168
>
>libllvm19:amd64 & libllvm19:i386 are now no longer co-installable which causes the removal of steam-installer and its dependencies, that seems like undesirable fallout from this change.

Yes, that undesirable fallout is #1115227 / #1115194. I sent a merge 
request to fix that regression 
(https://salsa.debian.org/pkg-llvm-team/llvm-toolchain/-/merge_requests/184) 
and it was merged but not yet released.

If you are using Steam, 32-bit Wine, or other 32-bit binaries that 
require Mesa graphics drivers on unstable, please work around this by 
installing the libllvm19:amd64 and libllvm19:i386 packages from testing 
until an llvm-toolchain-19 version fixing this regression is released to 
unstable.

     smcv