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From: Dima Kogan <dkogan@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libceres-dev: libceres-dev uninstallable due to the eigen3 version
 5 update
X-Debbugs-CC: Dima Kogan <dkogan@debian.org>
Date: Sat, 05 Sep 2026 16:22:55 -0700
Message-ID: <87v78j5lm8.fsf@secretsauce.net>
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Package: libceres-dev
Version: 2.2.0+dfsg-5
Severity: grave

Hi. This is the situation today:

  dima@eighty:~$ apt policy libeigen3-dev
  ...
  libeigen3-dev:
    ...
    Version table:
       5.0.1-1 500
          500 http://deb.debian.org/debian sid/main amd64 Packages

  dima@eighty:~$ apt show libceres-dev   

  Package: libceres-dev
  Version: 2.2.0+dfsg-5
  Depends: ... libeigen3-dev (>= 3.4.0), libeigen3-dev (<< 3.4.1)

I.e. currently libceres-dev can not be installed due to the version of
libeigen3-dev not being available.

The new libeigen3-dev was just uploaded a few days ago, and presumably
we know about this problem. And maybe there are others. I'd reporting
this to keep track.

Thanks!
]