Dear Maintainer,

On an Ubuntu system where python3-pil is not installed, I noticed that depicting
molecules in RStudio no longer works when using python3-rdkit. The error
message pointed at a missing PIL module.

On this Debian trixie system, I confirmed that molecules are correctly
depicted in a Jupyter notebook if python3-pil is installed, but if
it is not, I get an output like
<rdkit.Chem.rdchem.Mol object at 0x7faaaaaa000>
instead of a molecule depiction.

Therefore, I think python3-rdkit should have a dependency on python3-pil
in order to provide its molecule depiction functionality.

Cheers,

Johannes

Hello,

Bug #1118594 in rdkit reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/debichem-team/rdkit/-/commit/f97397c4d2f314ee150ca5941999c6fe95af77b4
------------------------------------------------------------------------
* debian/control, debian/control.in (python3-rdkit/Depends): Added
    python3-pil (Closes: #1118594).
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1118594

We believe that the bug you reported is fixed in the latest version of
rdkit, 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 1118594@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Michael Banck <mbanck@debian.org> (supplier of updated rdkit 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: Sat, 09 May 2026 18:41:57 +0200
Source: rdkit
Architecture: source
Version: 202603.2-1
Distribution: unstable
Urgency: medium
Maintainer: Debichem Team <debichem-devel@lists.alioth.debian.org>
Changed-By: Michael Banck <mbanck@debian.org>
Closes: 1118594
Changes:
 rdkit (202603.2-1) unstable; urgency=medium
 .
   * New upstream version 202603.2.
   * debian/patches/NoDownloads.patch: Removed GraphMol/MolInterchange hunk,
     functionality removed upstream.
   * debian/patches/sphinx_compile_fixes.patch: Refreshed.
   * debian/patches/fix_inchi_linking.patch: Likewise.
   * debian/patches/better_enums.patch: Likewise.
   * debian/control, debian/control.in (python3-rdkit/Depends): Added
     python3-pil (Closes: #1118594).
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