[Debichem-devel] Bug#1135513: votca: FTBFS: TypeError("argument of type '_CascadingStyleSheet' is not iterable")

Santiago Vila sanvila at debian.org
Sat May 2 00:29:42 BST 2026 

Package: src:votca
Version: 2025.1-2
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202605/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:votca, so that this is still
visible in the BTS web page for this package.

Thanks.

--------------------------------------------------------------------------------
[...]
 debian/rules clean
dh clean --with bash-completion,python3,sphinxdoc
   debian/rules override_dh_auto_clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
dh_auto_clean
py3clean /<<PKGBUILDDIR>>
rm -rf /<<PKGBUILDDIR>>/.pytest_cache
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_clean
 debian/rules binary
dh binary --with bash-completion,python3,sphinxdoc
   dh_update_autotools_config
   dh_autoreconf
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/<<PKGBUILDDIR>>'

[... snipped ...]

reading sources... [  3%] csg/advanced_topics
reading sources... [  4%] csg/bibliography
reading sources... [  4%] csg/csg_boltzmann
reading sources... [  5%] csg/csg_call
reading sources... [  5%] csg/csg_defaults
reading sources... [  6%] csg/csg_density
reading sources... [  6%] csg/csg_dlptopol
reading sources... [  7%] csg/csg_dump
reading sources... [  7%] csg/csg_fluctuations
reading sources... [  8%] csg/csg_fmatch
reading sources... [  8%] csg/csg_gmxtopol
reading sources... [  9%] csg/csg_imc_solve
reading sources... [  9%] csg/csg_inverse
reading sources... [ 10%] csg/csg_map
reading sources... [ 10%] csg/csg_orientcorr
reading sources... [ 11%] csg/csg_part_dist
reading sources... [ 11%] csg/csg_partial_rdf
reading sources... [ 12%] csg/csg_property
reading sources... [ 12%] csg/csg_radii
reading sources... [ 13%] csg/csg_resample
reading sources... [ 13%] csg/csg_reupdate
reading sources... [ 14%] csg/csg_scripts
reading sources... [ 14%] csg/csg_sphericalorder
reading sources... [ 15%] csg/csg_stat
reading sources... [ 15%] csg/csg_table
reading sources... [ 16%] csg/csg_traj_force
reading sources... [ 16%] csg/index
reading sources... [ 17%] csg/input_files
reading sources... [ 17%] csg/introduction
reading sources... [ 18%] csg/mapping
reading sources... [ 18%] csg/methods
reading sources... [ 19%] csg/preparing
reading sources... [ 19%] csg/reference
reading sources... [ 20%] csg/scripts/add_POT.pl
reading sources... [ 20%] csg/scripts/add_pot_generic.sh
reading sources... [ 20%] csg/scripts/calc_density_generic.sh
reading sources... [ 21%] csg/scripts/calc_kbint.sh
reading sources... [ 21%] csg/scripts/calc_pressure_gromacs.sh
reading sources... [ 22%] csg/scripts/calc_pressure_lammps.sh
reading sources... [ 22%] csg/scripts/calc_rdf_generic.sh
reading sources... [ 23%] csg/scripts/calc_target_rdf_generic.sh
reading sources... [ 23%] csg/scripts/check_csg_xml.py
reading sources... [ 24%] csg/scripts/clean_generic.sh
reading sources... [ 24%] csg/scripts/cma_processor.py
reading sources... [ 25%] csg/scripts/convergence_check_default.sh
reading sources... [ 25%] csg/scripts/dist_adjust.pl
reading sources... [ 26%] csg/scripts/dist_boltzmann_invert.pl
reading sources... [ 26%] csg/scripts/dummy.sh
reading sources... [ 27%] csg/scripts/functions_common.sh
reading sources... [ 27%] csg/scripts/functions_dlpoly.sh
reading sources... [ 28%] csg/scripts/functions_genericsim.sh
reading sources... [ 28%] csg/scripts/functions_gromacs.sh
reading sources... [ 29%] csg/scripts/iie.py
reading sources... [ 29%] csg/scripts/imc_stat_generic.sh
reading sources... [ 30%] csg/scripts/initialize_step_generic.sh
reading sources... [ 30%] csg/scripts/initialize_step_genericsim.sh
reading sources... [ 31%] csg/scripts/initialize_step_optimizer.sh
reading sources... [ 31%] csg/scripts/initialize_step_re.sh
reading sources... [ 32%] csg/scripts/inverse.sh
reading sources... [ 32%] csg/scripts/kbibi_ramp_correction.pl
reading sources... [ 33%] csg/scripts/lj_126.pl
reading sources... [ 33%] csg/scripts/merge_tables.pl
reading sources... [ 34%] csg/scripts/optimizer_parameters_to_potential.sh
reading sources... [ 34%] csg/scripts/optimizer_prepare_state.sh
reading sources... [ 35%] csg/scripts/optimizer_state_to_mapping.sh
reading sources... [ 35%] csg/scripts/optimizer_state_to_potentials.sh
reading sources... [ 36%] csg/scripts/optimizer_target_density.sh
reading sources... [ 36%] csg/scripts/optimizer_target_pressure.sh
reading sources... [ 37%] csg/scripts/optimizer_target_rdf.sh
reading sources... [ 37%] csg/scripts/post_add.sh
reading sources... [ 38%] csg/scripts/post_add_single.sh
reading sources... [ 38%] csg/scripts/post_update_generic.sh
reading sources... [ 39%] csg/scripts/post_update_generic_single.sh
reading sources... [ 39%] csg/scripts/post_update_re_single.sh
reading sources... [ 40%] csg/scripts/postadd_acc_convergence.sh
reading sources... [ 40%] csg/scripts/postadd_average.sh
reading sources... [ 40%] csg/scripts/postadd_compress.sh
reading sources... [ 41%] csg/scripts/postadd_convergence.sh
reading sources... [ 41%] csg/scripts/postadd_copyback.sh
reading sources... [ 42%] csg/scripts/postadd_dummy.sh
reading sources... [ 42%] csg/scripts/postadd_overwrite.sh
reading sources... [ 43%] csg/scripts/postadd_plot.sh
reading sources... [ 43%] csg/scripts/postadd_shift.sh
reading sources... [ 44%] csg/scripts/postadd_smooth_at_cut_off.sh
reading sources... [ 44%] csg/scripts/postupd_addlj.sh
reading sources... [ 45%] csg/scripts/postupd_cibi_correction.sh
reading sources... [ 45%] csg/scripts/postupd_extrapolate.sh
reading sources... [ 46%] csg/scripts/postupd_ibi.sh
reading sources... [ 46%] csg/scripts/postupd_kbibi_correction.sh
reading sources... [ 47%] csg/scripts/postupd_pressure.sh
reading sources... [ 47%] csg/scripts/postupd_scale.sh
reading sources... [ 48%] csg/scripts/postupd_smooth.sh
reading sources... [ 48%] csg/scripts/postupd_splinesmooth.sh
reading sources... [ 49%] csg/scripts/potential_extrapolate.sh
reading sources... [ 49%] csg/scripts/potential_shift.pl
reading sources... [ 50%] csg/scripts/potential_to_dlpoly.sh
reading sources... [ 50%] csg/scripts/potential_to_generic.sh
reading sources... [ 51%] csg/scripts/potential_to_gromacs.sh
reading sources... [ 51%] csg/scripts/potential_to_lammps.sh
reading sources... [ 52%] csg/scripts/potentials_to_dlpoly.sh
reading sources... [ 52%] csg/scripts/potentials_to_generic.sh
reading sources... [ 53%] csg/scripts/pre_update_re.sh
reading sources... [ 53%] csg/scripts/prepare_generic.sh
reading sources... [ 54%] csg/scripts/prepare_generic_single.sh
reading sources... [ 54%] csg/scripts/prepare_iie.sh
reading sources... [ 55%] csg/scripts/prepare_imc.sh
reading sources... [ 55%] csg/scripts/prepare_optimizer.sh
reading sources... [ 56%] csg/scripts/prepare_optimizer_single.sh
reading sources... [ 56%] csg/scripts/prepare_re.sh
reading sources... [ 57%] csg/scripts/pressure_cor_simple.pl
reading sources... [ 57%] csg/scripts/pressure_cor_wjk.pl
reading sources... [ 58%] csg/scripts/resample_target.sh
reading sources... [ 58%] csg/scripts/run_genericsim.sh
reading sources... [ 59%] csg/scripts/run_gromacs.sh
reading sources... [ 59%] csg/scripts/simplex_downhill_processor.pl
reading sources... [ 60%] csg/scripts/table_average.sh
reading sources... [ 60%] csg/scripts/table_change_flag.sh
reading sources... [ 60%] csg/scripts/table_combine.pl
reading sources... [ 61%] csg/scripts/table_dummy.sh
reading sources... [ 61%] csg/scripts/table_extrapolate.pl
reading sources... [ 62%] csg/scripts/table_functional.sh
reading sources... [ 62%] csg/scripts/table_get_value.pl
reading sources... [ 63%] csg/scripts/table_integrate.pl
reading sources... [ 63%] csg/scripts/table_linearop.pl
reading sources... [ 64%] csg/scripts/table_scale.pl
reading sources... [ 64%] csg/scripts/table_smooth.pl
reading sources... [ 65%] csg/scripts/table_smooth_at_cut_off.py
reading sources... [ 65%] csg/scripts/table_switch_border.pl
reading sources... [ 66%] csg/scripts/table_to_tab.pl
reading sources... [ 66%] csg/scripts/table_to_xvg.pl
reading sources... [ 67%] csg/scripts/tables_jackknife.pl
reading sources... [ 67%] csg/scripts/tag_file.sh
reading sources... [ 68%] csg/scripts/update_ibi.sh
reading sources... [ 68%] csg/scripts/update_ibi_pot.pl
reading sources... [ 69%] csg/scripts/update_ibi_single.sh
reading sources... [ 69%] csg/scripts/update_iie.sh
reading sources... [ 70%] csg/scripts/update_imc.sh
reading sources... [ 70%] csg/scripts/update_imc_single.sh
reading sources... [ 71%] csg/scripts/update_optimizer.sh
reading sources... [ 71%] csg/scripts/update_optimizer_single.sh
reading sources... [ 72%] csg/scripts/update_re.sh
reading sources... [ 72%] csg/theory
reading sources... [ 73%] csg/topol
reading sources... [ 73%] index
reading sources... [ 74%] tools/index
reading sources... [ 74%] tools/reference
reading sources... [ 75%] tools/votca_property
reading sources... [ 75%] websiteAndDocumentation
reading sources... [ 76%] xtp-tutorials/XTP-TUTORIAL
reading sources... [ 76%] xtp/Architecture
reading sources... [ 77%] xtp/XTP-MANUAL
reading sources... [ 77%] xtp/apdft
reading sources... [ 78%] xtp/bibliography
reading sources... [ 78%] xtp/coupling
reading sources... [ 79%] xtp/densityanalysis
reading sources... [ 79%] xtp/dftgwbse
reading sources... [ 80%] xtp/diabatization
reading sources... [ 80%] xtp/eanalyze
reading sources... [ 80%] xtp/einternal
reading sources... [ 81%] xtp/elstruc_theory
reading sources... [ 81%] xtp/eqm
reading sources... [ 82%] xtp/excitoncoupling
reading sources... [ 82%] xtp/gencube
reading sources... [ 83%] xtp/gpu_benchmark
reading sources... [ 83%] xtp/ianalyze
reading sources... [ 84%] xtp/iexcitoncl
reading sources... [ 84%] xtp/iqm
reading sources... [ 85%] xtp/kmclifetime
reading sources... [ 85%] xtp/kmcmultiple
reading sources... [ 86%] xtp/log2mps
reading sources... [ 86%] xtp/mapchecker
reading sources... [ 87%] xtp/mol2orb
reading sources... [ 87%] xtp/molpol
reading sources... [ 88%] xtp/neighborlist
reading sources... [ 88%] xtp/orb2fchk
reading sources... [ 89%] xtp/orb2mol
reading sources... [ 89%] xtp/partialcharges
reading sources... [ 90%] xtp/pyxtp
reading sources... [ 90%] xtp/qmmm
reading sources... [ 91%] xtp/reference
reading sources... [ 91%] xtp/spectrum
reading sources... [ 92%] xtp/transfer_theory
reading sources... [ 92%] xtp/transport_theory
reading sources... [ 93%] xtp/vaverage
reading sources... [ 93%] xtp/workflows_and_calculators
reading sources... [ 94%] xtp/xtp_autogen_mapping
reading sources... [ 94%] xtp/xtp_basisset
reading sources... [ 95%] xtp/xtp_introduction
reading sources... [ 95%] xtp/xtp_map
reading sources... [ 96%] xtp/xtp_map_overview
reading sources... [ 96%] xtp/xtp_modify_jobfile
reading sources... [ 97%] xtp/xtp_parallel
reading sources... [ 97%] xtp/xtp_parallel_overview
reading sources... [ 98%] xtp/xtp_qmmm2qm
reading sources... [ 98%] xtp/xtp_run
reading sources... [ 99%] xtp/xtp_run_overview
reading sources... [ 99%] xtp/xtp_tools
reading sources... [100%] xtp/xtp_tools_overview
reading sources... [100%] xtp/xtp_update_mapfile

/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx/xtp-tutorials/XTP-TUTORIAL.rst:4: WARNING: toctree contains reference to nonexisting document 'xtp-tutorials/DFTGWBSE_ENERGY' [toc.not_readable]
/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx/xtp-tutorials/XTP-TUTORIAL.rst:4: WARNING: toctree contains reference to nonexisting document 'xtp-tutorials/geometry_optimization' [toc.not_readable]
/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx/xtp-tutorials/XTP-TUTORIAL.rst:4: WARNING: toctree contains reference to nonexisting document 'xtp-tutorials/single_point' [toc.not_readable]
/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx/xtp-tutorials/XTP-TUTORIAL.rst:4: WARNING: toctree contains reference to nonexisting document 'xtp-tutorials/QMMM_GROMACS' [toc.not_readable]
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
copying assets... 
copying static files... 
Writing evaluated template result to /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx.html/_static/documentation_options.js
Writing evaluated template result to /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx.html/_static/language_data.js
Writing evaluated template result to /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx.html/_static/basic.css
copying static files: done
copying extra files... 
copying extra files: done
copying assets: done
writing output... [  0%] Architecture

Theme error!

Versions
========

* Platform:         linux; (Linux-6.12.74+deb13+1-cloud-amd64-x86_64-with-glibc2.42)
* Python version:   3.13.12 (CPython)
* Sphinx version:   9.1.0
* Docutils version: 0.22.4
* Jinja2 version:   3.1.6
* Pygments version: 2.19.2

Last Messages
=============

    Writing evaluated template result to /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx.html/_static/documentation_options.js
    Writing evaluated template result to /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx.html/_static/language_data.js
    Writing evaluated template result to /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/sphinx.html/_static/basic.css
    copying static files: done
    copying extra files...
    copying extra files: done
    copying assets: done
    writing output... [  0%]
    Architecture

Loaded Extensions
=================

* sphinx.ext.mathjax (9.1.0)
* alabaster (1.0.0)
* nbsphinx (0.9.5)
* sphinx.ext.githubpages (9.1.0)

Traceback
=========

      File "/usr/lib/python3/dist-packages/sphinx/builders/html/__init__.py", line 1238, in handle_page
        raise ThemeError(msg) from exc
    sphinx.errors.ThemeError: An error happened in rendering the page Architecture.
    Reason: TypeError("argument of type '_CascadingStyleSheet' is not iterable")


The full traceback has been saved in:
/tmp/sphinx-err-s83_ofel.log

To report this error to the developers, please open an issue at <https://github.com/sphinx-doc/sphinx/issues/>. Thanks!
Please also report this if it was a user error, so that a better error message can be provided next time.
make[5]: *** [share/sphinx/CMakeFiles/sphinx.dir/build.make:81: share/sphinx/CMakeFiles/sphinx] Error 2
make[5]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
make[4]: *** [CMakeFiles/Makefile2:10225: share/sphinx/CMakeFiles/sphinx.dir/all] Error 2
make[4]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
make[3]: *** [CMakeFiles/Makefile2:10232: share/sphinx/CMakeFiles/sphinx.dir/rule] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
make[2]: *** [Makefile:3562: sphinx] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
make[1]: *** [debian/rules:33: override_dh_auto_build-indep] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:50: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
--------------------------------------------------------------------------------

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