Passing on a request from the developers of the FEX x86 emulator:

While building mixed-architecture software, they've been frustrated by
the fact that files in /usr/lib/llvm-19 are not multi-arch
co-installable, so on Debian/Ubuntu they can't build amd64 and i386 code
that uses libLLVM (such as 64- and 32-bit versions of Mesa) without
entering separate containers/chroots.

This affects llvm-{19,20}-dev and perhaps others.

I'm told that on other distributions like the Red Hat and Arch families,
the equivalent of our /usr/lib/llvm-19 is something like
/usr/lib{64,}/llvm (Red Hat) or /usr/lib{,32}/llvm (Arch). This suggests
that on Debian, it should be possible to use our equivalent of lib64,
/usr/lib/${DEB_HOST_MULTIARCH}/llvm-{19,20,...}, for a similar level of
co-installability.

Thanks,
    smcv

Closing bugs reported against llvm-toolchain-20 now that it got removed
from the archive.

----- Message transféré de Debian Bug Tracking System <owner@bugs.debian.org> -----

From: Debian Bug Tracking System <owner@bugs.debian.org>
To: Sylvestre Ledru <sylvestre@debian.org>
Reply-To: 1116216@bugs.debian.org
X-Mailer: MIME-tools 5.510 (Entity 5.510)
Date: Tue, 14 Jul 2026 09:33:02 +0000
Subject: Bug#1116216 closed by Debian FTP Masters <ftpmaster@ftp-master.debian.org> (Bug#1116216: Removed package(s) from experimental)
Message-ID: <handler.1116216.D1116216.17840214462041426.notifdone@bugs.debian.org>

This is an automatic notification regarding your Bug report
which was filed against the ftp.debian.org package:

#1116216: RM: llvm-toolchain-20/experimental -- ROM; Won't be in unstable

It has been closed by Debian FTP Masters <ftpmaster@ftp-master.debian.org>.

Their explanation is attached below along with your original report.
If this explanation is unsatisfactory and you have not received a
better one in a separate message then please contact Debian FTP Masters <ftpmaster@ftp-master.debian.org> by
replying to this email.

------------------- Reason -------------------
ROM; Won't be in unstable
----------------------------------------------

Note that the package(s) have simply been removed from the tag
database and may (or may not) still be in the pool; this is not a bug.
The package(s) will be physically removed automatically when no suite
references them (and in the case of source, when no binary references
it).  Please also remember that the changes have been done on the
master archive and will not propagate to any mirrors until the next
dinstall run at the earliest.

Packages are usually not removed from testing by hand. Testing tracks
unstable and will automatically remove packages which were removed
from unstable when removing them from testing causes no dependency
problems. The release team can force a removal from testing if it is
really needed, please contact them if this should be the case.

Bugs which have been reported against this package are not automatically
removed from the Bug Tracking System.  Please check all open bugs and
close them or re-assign them to another package if the removed package
was superseded by another one.

The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1116216@bugs.debian.org.

The full log for this bug can be viewed at https://bugs.debian.org/1116216

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Thorsten Alteholz (the ftpmaster behind the curtain)

From: Sylvestre Ledru <sylvestre@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
X-Mailer: reportbug 13.2.0
X-Spam-Status: No, score=-31.0 required=4.0 tests=BAYES_00,
 BODY_INCLUDES_CONTROL_AFFECTS,BODY_INCLUDES_PACKAGE,FROMDEVELOPER,
 HAS_PACKAGE,RCVD_IN_VALIDITY_CERTIFIED_BLOCKED,
 RCVD_IN_VALIDITY_RPBL_BLOCKED,RCVD_IN_VALIDITY_SAFE_BLOCKED,
 SPF_HELO_NONE,SPF_NONE,XMAILER_REPORTBUG autolearn=ham autolearn_force=no
 version=4.0.1-bugs.debian.org_2005_01_02
Date: Wed, 24 Sep 2025 13:16:18 +0200
Subject: RM: llvm-toolchain-20/experimental -- ROM; Won't be in unstable
Message-ID: <175871257897.3751907.3638191059166209781.reportbug@burias.ecranbleu.org>

Package: ftp.debian.org
Severity: normal
X-Debbugs-Cc: llvm-toolchain-20@packages.debian.org
Control: affects -1 + src:llvm-toolchain-20
User: ftp.debian.org@packages.debian.org
Usertags: remove


Hello,

Please remove llvm-toolchain-20 from experimental
To make our life easier, i won't be uploading in unstable.
We have now 21 and 19 if needed.

thanks
Sylvestre

----- Fin du message transféré -----