Hi,

GNU Make now has a --shuffle option that simulates non-deterministic ordering
of target prerequisites. See
https://trofi.github.io/posts/238-new-make-shuffle-mode.html and also previous
work in Debian by Santiago Vila:
https://people.debian.org/~sanvila/make-shuffle/

This package fails to build with make --shuffle=reverse.
This is likely to be caused by a missing dependency in
debian/rules or an upstream Makefile.

More information about this mass bug filing is available at
https://wiki.debian.org/qa.debian.org/FTBFS/Shuffle

Relevant part (hopefully):
The full build log is available from:
http://qa-logs.debian.net/2025/05/05/shuffle/reverse/unifrac-tools_1.4-3_unstable_reverse.log

If you reassign this bug to another package, please mark it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

We believe that the bug you reported is fixed in the latest version of
unifrac-tools, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1105659@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Andreas Tille <tille@debian.org> (supplier of updated unifrac-tools package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Thu, 02 Jul 2026 14:53:58 +0200
Source: unifrac-tools
Architecture: source
Version: 1.6.1-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Med Packaging Team <debian-med-packaging@lists.alioth.debian.org>
Changed-By: Andreas Tille <tille@debian.org>
Closes: 1105659 1139615
Changes:
 unifrac-tools (1.6.1-1) unstable; urgency=medium
 .
   [ Andreas Tille ]
   * New upstream version
     Closes: #1105659
   * d/watch: version=5
   * Standards-Version: 4.7.4 (routine-update)
   * Reflow Uploaders field (cme)
   * Remove Priority field (cme)
   * Drop 'Rules-Requires-Root: no' from d/control (routine-update)
   * Build-Depends: libskbb-dev
   * Reformat the Last-Update date as ISO YYYY-MM-DD.
   * No need to use dh-exec any more
 .
   [ Gilles Filippini ]
   * Fix FTBFS against HDF5 2.1.0
     Closes: #1139615
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