Your message dated Fri, 27 Feb 2026 21:01:33 +0000
with message-id <[email protected]>
and subject line Re: Bug#1123931: libegl-mesa0: Multi-arch install of mesa
broken in testing due to impossible constraints
has caused the Debian Bug report #1123931,
regarding libegl-mesa0: Multi-arch install of mesa broken in testing due to
impossible constraints
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1123931: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1123931
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libegl-mesa0
Version: 25.2.8-2+b3
Severity: important
Dear Maintainer,
trying to install/upgrade any mesa package in "testing" right now fails
completely when using amd64 + any other arch (eg. amd64 + i386) due to
impossible to satisfy constraints between the package versions (amd64 has a -b3
version and constrains i386 to it, while i386 only has a -b2 version).
Shell output (explicitly specifying the package versions to get more debug
info):
$ apt install libegl-mesa0:i386/testing libgbm1:i386/testing mesa-
libgallium:i386/testing libgl1-mesa-dri:i386/testing libglx-mesa0:i386/testing
libegl-mesa0:i386/testing libgbm1/testing libegl-mesa0/testing mesa-li
bgallium/testing
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'libegl-mesa0:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'libgbm1:i386'
because of 'libegl-mesa0:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'mesa-
libgallium:i386' because of 'libgbm1:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'libgbm1:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'mesa-
libgallium:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'libgl1-mesa-
dri:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'libglx-mesa0:i386'
Selected version '25.2.8-2+b2' (Debian:testing [i386]) for 'libegl-mesa0:i386'
Selected version '25.2.8-2+b3' (Debian:testing [amd64]) for 'libgbm1'
Selected version '25.2.8-2+b3' (Debian:testing [amd64]) for 'mesa-libgallium'
because of 'libgbm1'
Selected version '25.2.8-2+b3' (Debian:testing [amd64]) for 'libegl-mesa0'
Selected version '25.2.8-2+b3' (Debian:testing [amd64]) for 'mesa-libgallium'
Solving dependencies... Error!
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
Unsatisfied dependencies:
libegl-mesa0 : Breaks: libegl-mesa0:i386 (!= 25.2.8-2+b3) but 25.2.8-2+b2 is
to be installed
libegl-mesa0:i386 : Breaks: libegl-mesa0 (!= 25.2.8-2+b2) but 25.2.8-2+b3 is
to be installed
libgbm1 : Breaks: libgbm1:i386 (!= 25.2.8-2+b3) but 25.2.8-2+b2 is to be
installed
libgbm1:i386 : Breaks: libgbm1 (!= 25.2.8-2+b2) but 25.2.8-2+b3 is to be
installed
libgl1-mesa-dri : Depends: libgbm1 (= 25.2.6-1) but 25.2.8-2+b3 is to be
installed
Breaks: libgl1-mesa-dri:i386 (!= 25.2.6-1) but 25.2.8-2+b2
is to be installed
libgl1-mesa-dri:i386 : Breaks: libgl1-mesa-dri (!= 25.2.8-2+b2) but 25.2.6-1
is to be installed
libglx-mesa0 : Depends: mesa-libgallium (= 25.2.6-1) but 25.2.8-2+b3 is to be
installed
Breaks: libglx-mesa0:i386 (!= 25.2.6-1) but 25.2.8-2+b2 is to
be installed
libglx-mesa0:i386 : Breaks: libglx-mesa0 (!= 25.2.8-2+b2) but 25.2.6-1 is to
be installed
mesa-libgallium : Breaks: mesa-libgallium:i386 (!= 25.2.8-2+b3) but
25.2.8-2+b2 is to be installed
mesa-libgallium:i386 : Breaks: mesa-libgallium (!= 25.2.8-2+b2) but
25.2.8-2+b3 is to be installed
Error: Unable to satisfy dependencies. Reached two conflicting decisions:
1. libgbm1:i386=25.2.8-2+b2 is selected as an upgrade
2. libgbm1:i386=25.2.8-2+b2 is not selected for install because:
1. libgbm1:amd64=25.2.8-2+b3 is selected as an upgrade
2. libgbm1:amd64=25.2.8-2+b3 Breaks libgbm1:i386 (!= 25.2.8-2+b3)
[selected libgbm1:amd64=25.2.8-2+b3]
-- System Information:
Debian Release: forky/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'testing-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.17.9+deb14-amd64 (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages libegl-mesa0 depends on:
ii libc6 2.42-5
ii libdrm2 2.4.129-1
ii libexpat1 2.7.3-1
ii libgbm1 25.2.6-1
ii libgcc-s1 15.2.0-9
ii libwayland-client0 1.24.0-2+b1
ii libx11-xcb1 2:1.8.12-1
ii libxcb-dri3-0 1.17.0-2+b1
ii libxcb-present0 1.17.0-2+b1
ii libxcb-randr0 1.17.0-2+b1
ii libxcb-shm0 1.17.0-2+b1
ii libxcb-xfixes0 1.17.0-2+b1
ii libxcb1 1.17.0-2+b1
ii mesa-libgallium 25.2.6-1
libegl-mesa0 recommends no packages.
libegl-mesa0 suggests no packages.
Versions of packages xserver-xorg depends on:
ii x11-xkb-utils 7.7+9
ii xkb-data 2.42-1
ii xorgxrdp [xorg-driver-video] 1:0.10.2-1
ii xserver-xorg-core 2:21.1.21-1
ii xserver-xorg-input-libinput [xorg-driver-input] 1.5.0-1
ii xserver-xorg-input-void [xorg-driver-input] 1:1.4.1-1+b3
ii xserver-xorg-input-wacom [xorg-driver-input] 1.2.4-1
ii xserver-xorg-video-amdgpu [xorg-driver-video] 25.0.0-1
ii xserver-xorg-video-dummy [xorg-driver-video] 1:0.4.0-1
ii xserver-xorg-video-intel [xorg-driver-video] 2:2.99.917+git20210115-1
Versions of packages xserver-xorg recommends:
ii libgl1-mesa-dri 25.2.6-1
ii xserver-xorg-legacy 2:21.1.21-1
Versions of packages xserver-xorg-core depends on:
ii keyboard-configuration 1.244
ii libaudit1 1:4.1.2-1+b1
ii libc6 2.42-5
ii libdbus-1-3 1.16.2-2
ii libdrm2 2.4.129-1
ii libegl1 1.7.0-1+b2
ii libepoxy0 1.5.10-2
ii libgbm1 25.2.6-1
ii libgl1 1.7.0-1+b2
ii libnettle8t64 3.10.2-1
ii libpciaccess0 0.17-3+b3
ii libpixman-1-0 0.46.4-1
ii libselinux1 3.9-2
ii libsystemd0 259~rc2-1
ii libudev1 259~rc2-1
ii libunwind8 1.8.1-0.1
ii libxau6 1:1.0.11-1
ii libxcvt0 0.1.3-1
ii libxdmcp6 1:1.1.5-1
ii libxfont2 1:2.0.6-1+b3
ii libxshmfence1 1.3.3-1
ii udev 259~rc2-1
ii xserver-common 2:21.1.21-1
Versions of packages xserver-xorg-core recommends:
ii libgl1-mesa-dri 25.2.6-1
ii libpam-systemd [logind] 259~rc2-1
pn xcvt <none>
Versions of packages xserver-xorg-core suggests:
ii xfonts-100dpi 1:1.0.5
ii xfonts-75dpi 1:1.0.5
ii xfonts-scalable 1:1.0.3-1.3
-- no debconf information
--- End Message ---
--- Begin Message ---
On Wed, 24 Dec 2025 at 12:28:26 +0200, Jaen wrote:
trying to install/upgrade any mesa package in "testing" right now fails
completely when using amd64 + any other arch (eg. amd64 + i386) due to
impossible to satisfy constraints between the package versions (amd64 has a -b3
version and constrains i386 to it, while i386 only has a -b2 version).
This was temporary "multiarch skew" between architectures, caused by a
binary rebuild on amd64 that should ideally have been done uniformly
across all architectures, and was fixed by the release team scheduling
more rebuilds (see <https://bugs.debian.org/1123577>).
smcv
--- End Message ---
