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To: maintonly@bugs.debian.org
From: Anton Gladky &lt;gladk@debian.org&gt;
Subject: openstructure: FTBFS with libeigen3-dev 5.0 (major version transition)
Message-Id: &lt;20260511203101.719C1BE5C10@MacBook-Air-von-Anton.local&gt;
Date: Mon, 11 May 2026 22:31:01 +0200 (CEST)
Delivered-To: maintonly@bugs.debian.org

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Package: src:openstructure
Version: 2.11.1-2
Severity: important
Tags: sid forky ftbfs
User: debian-devel@lists.debian.org
Usertags: eigen3-5.0

Dear Maintainer,

your package depends on libeigen3-dev. The upstream released a
new major version of this mathematical library, 5.0.0. Some
basic information about new features and changes in this version
can be found here:

  https://libeigen.gitlab.io/releases/5.0/

This is a major version change and may require code changes in packages
depending on eigen3. The key breaking changes include:

  - Minimum required C++ standard is now C++14
  - Changes in the build system integration
  - Some API name changes

openstructure FTBFS with libeigen3-dev 5.0.1. The full build log is available at:

  https://debusine.debian.net/debian/developers-gladk-eigen3/artifact/3759854/raw/openstructure_2.11.1-2_amd64-2026-05-08T14:50:48Z.build

Here is the most probably relevant part of the failing build log:
    ===========================================

ResourceWarning: Enable tracemalloc to get the object allocation traceback
..........................................
======================================================================
ERROR: testCalcEnrichmentAUC (__main__.TestTable.testCalcEnrichmentAUC)
- ----------------------------------------------------------------------
Traceback (most recent call last):
  File &quot;/build/reproducible-path/openstructure-2.11.1/modules/base/tests/test_table.py&quot;, line 1275, in testCalcEnrichmentAUC
    auc = tab.ComputeEnrichmentAUC(score_col='score', score_dir='-',
                                   class_col='rmsd', class_cutoff=2.0,
                                   class_dir='-')
  File &quot;/build/reproducible-path/openstructure-2.11.1/obj-x86_64-linux-gnu/stage/lib/python3.13/dist-packages/ost/table.py&quot;, line 2696, in ComputeEnrichmentAUC
    return np.trapz(enr[1], enr[0])
           ^^^^^^^^
  File &quot;/usr/lib/python3/dist-packages/numpy/__init__.py&quot;, line 792, in __getattr__
    raise AttributeError(f&quot;module {__name__!r} has no attribute {attr!r}&quot;)
AttributeError: module 'numpy' has no attribute 'trapz'. Did you mean: 'trace'?


    ===========================================
libeigen3-dev_5.0.1-1 is available in experimental.

When this package version lands into unstable (probably at the beginning
of June 2026), this bug will be increased in severity to serious.

Thanks,

Anton
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