Package: libgsl2
Version: 2.4+dfsg-1
Severity: normal

Dear Maintainer,

since libgsl2=2.4+dfsg-1 reverse dependencies are broken, I experienced
the problem with bogofilter (which depends on bogofilter-bdb which
depends on libgsl2):

  bogofilter: error while loading shared libraries: libgsl.so.19: cannot open 
shared object file: No such file or directory

This seems to happens because 2.4+dfsg-1 bumped the library version but
the package name is always the same and does not reflect the SONAME
change.

In libgsl2=2.4+dfsg-1 we have:

  libgsl2: /usr/lib/x86_64-linux-gnu/libgsl.so.23
  libgsl2: /usr/lib/x86_64-linux-gnu/libgsl.so.23.0.0

In libgsl2=2.3+dfsg-1 we had:

  /usr/lib/x86_64-linux-gnu/libgsl.so.19
  /usr/lib/x86_64-linux-gnu/libgsl.so.19.3.0

as bogofilter expects.

Downgrading to libgsl2=2.3+dfsg-1 fixes the problem with bogofilter.

Rebuilding the reverse dependencies would also work but maybe this is
the chance to fix the package name of libgsl2?

Thanks,
   Antonio

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (900, 'unstable'), (500, 'unstable-debug')
Architecture: amd64 (x86_64)

Kernel: Linux 4.11.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8), 
LANGUAGE=it_IT.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libgsl2 depends on:
ii  libc6  2.24-12

libgsl2 recommends no packages.

Versions of packages libgsl2 suggests:
pn  gsl-ref-psdoc | gsl-doc-pdf | gsl-doc-info | gsl-ref-html  <none>

-- no debconf information
-- 
Antonio Ospite
https://ao2.it
https://twitter.com/ao2it

A: Because it messes up the order in which people normally read text.
   See http://en.wikipedia.org/wiki/Posting_style
Q: Why is top-posting such a bad thing?

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