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From: Alastair McKinstry <mckinstry@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: llvm-toolchain-22: Overly restrictive conflicts for libmlir-*
Message-ID: <177937703081.1172327.2101753799341115986.reportbug@mail.mckinstry.ie>
X-Mailer: reportbug 13.2.0
Date: Thu, 21 May 2026 16:23:50 +0100
X-Debian-User: mckinstry
Delivered-To: submit@bugs.debian.org

Source: llvm-toolchain-22
Severity: normal

Hi,

I'm trying to build packages with flang-21 and flang-22 simultaneously.

(Building with dh-fortran which keeps the libraries/modules separate; the aim is to get modules for
both compilers simultaneously).
flang-21 and flang-22 (etc) can't be co-installed because libmlir-x.y conflict. However it appears they are
distinct and should be able to co-install; is this a relic of previous versions or am I missing
something?

Best regards
Alastair


-- System Information:
Debian Release: 13.5
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.86+deb13-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_IE.UTF-8), LANGUAGE=en_IE:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
]