[Debichem-devel] Bug#1118594: python3-rdkit: Dependency python3-pil is missing

[Johannes Ranke]

Package: python3-rdkit
Version: 202503.1-4
Severity: normal

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


-- System Information:
Debian Release: 13.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable'), (15, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.48+deb13-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-rdkit depends on:
ii  fonts-freefont-ttf                                   20211204+svn4273-2
ii  libboost-numpy1.83.0 [libboost-numpy1.83.0-py313]    1.83.0-4.2
ii  libboost-python1.83.0 [libboost-python1.83.0-py313]  1.83.0-4.2
ii  libboost-serialization1.83.0                         1.83.0-4.2
ii  libc6                                                2.41-12
ii  libcairo2                                            1.18.4-1+b1
ii  libcoordgen3                                         3.0.2-1+b2
ii  libgcc-s1                                            14.2.0-19
ii  librdkit1t64                                         202503.1-4
ii  libstdc++6                                           14.2.0-19
ii  python3                                              3.13.5-1
ii  python3-numpy [python3-numpy2-abi0]                  1:2.2.4+ds-1
ii  rdkit-data                                           202503.1-4

python3-rdkit recommends no packages.

Versions of packages python3-rdkit suggests:
pn  rdkit-doc  <none>

-- no debconf information