clustalw lost in debian/dists/sid/main/binary-i386/Packages.{gx}z ?

Hi,

I'm working on some time_t side effects on the emboss package and by
doing so stumbled I upon the fact that i386 builds of packages with a
Build-Dependency on clustalw are failing.  You can see an example in
Salsa CI for libbio-tools-run-alignment-clustalw-perl[1] which contains

   The following packages have unmet dependencies:
    builddeps:. : Depends: clustalw but it is not installable
   E: Unable to correct problems, you have held broken packages.

When checking the package pool[2] I can find
   clustalw_2.1+lgpl-7_i386.deb
which is easily installable in some chroot I created using

   sudo debootstrap --arch=i386 sid i386-chroot http://deb.debian.org/debian

Debci seems to be fine in testing clustalw on all architectures[3] and
according to build logs[4] all should be fine.  Unfortunately

   wget -q  -O - http://ftp.debian.org/debian/dists/sid/main/binary-i386/Packages.xz | xzgrep "Package: *clustalw" Packages.xz

is empty and I wonder why.  Is the Packages file for i386 just broken
or is it me?

Kind regards
    Andreas.

[1] https://salsa.debian.org/perl-team/modules/packages/libbio-tools-run-alignment-clustalw-perl/-/jobs/5431253
[2] http://ftp.debian.org/debian/pool/main/c/clustalw/
[3] https://ci.debian.net/packages/c/clustalw/unstable/i386/
[4] https://buildd.debian.org/status/package.php?p=clustalw