gnu: Pin old pybind11 version.

* gnu/packages/python-xyz.scm (pybind11): Move definition to (pybind11-2). (python-awkward-cpp, python-contourpy, python-hnswlib, python-dm-tree, python-matplotlib, python-pikepdf, python-optree, python-fusepy): Change reference to pybind11-2. * gnu/packages/astronomy.scm (aoflagger, python-galsim, python-pyclp), gnu/packages/bioinformatics.scm (python-metacells, python-strawc, python-coolbox, python-pyspoa, python-scvelo), gnu/packages/chemistry.scm (avogadrolibs), gnu/packages/computer-architecture.scm (gem5), gnu/packages/duckdb.scm (python-duckdb), gnu/packages/electronics.scm (nextpnr, prjtrellis), gnu/packages/engineering.scm (python-orocos-kinematics-dynamics), gnu/packages/geo.scm (ogs-serial), gnu/packages/graphics.scm (openshadinglanguage, openimageio), gnu/packages/image-processing.scm (opencolorio), gnu/packages/machine-learning.scm (python-fasttext, python-ml-dtypes, onnx, onnx-optimizer, onnxruntime, dlib, tensorflow-lite, tensorpipe, python-pytorch, python-torchvision, python-ctranslate2, python-hmmlearn, python-dlib), gnu/packages/maths.scm (python-accupy, python-ducc0), gnu/packages/networking.scm (libcamera), gnu/packages/opencl.scm (python-pyopencl), gnu/packages/package-management.scm (python-libmambapy), gnu/packages/physics.scm (python-brille, python-gofit), gnu/packages/python-check.scm (python-xdoctest), gnu/packages/python-science.scm (pyre, python-boost-histogram, python-cvxpy, python-iminuit, python-osqp, python-pyamg, python-qdldl, python-scikit-build-core, python-scipy, python-vaex-core, python-pyfma), gnu/packages/radio.scm (gnuradio, gr-osmosdr, gr-dsd, gr-iqbal, gr-satellites, limesuite-ng), gnu/packages/simulation.scm (fenics, python-dolfin-adjoint), gnu/packages/statistics.scm (python-diptest, python-george), gnu/packages/syndication.scm (syndication-domination): Change reference to pybind11-2. Change-Id: Ib6abc8580fc2b4c35172f251ff6ba7d80ced4b7b Signed-off-by: Gabriel Wicki <gabriel@erlikon.ch>
2026-04-07 13:40:36 +02:00 · 2026-03-05 13:41:12 +01:00
parent 13346ec997
commit f86ff1db98
23 changed files with 69 additions and 69 deletions
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -257,7 +257,7 @@ reused in several astronomical applications, such as @code{wsclean},
           boost
           pkg-config
           python
-           pybind11))
+           pybind11-2))
    (inputs
     (list casacore
           cfitsio
@@ -5112,7 +5112,7 @@ CFITSIO library.  Among other things, it can
     (list eigen
           fftw))
    (propagated-inputs
-     (list pybind11     ;XXX: Double check if it needs be here.
+     (list pybind11-2     ;XXX: Double check if it needs be here.
           python-astropy
           python-lsstdesc-coord
           python-numpy))
@@ -7557,7 +7557,7 @@ and the Generalized Lomb-Scargle periodogram
    (build-system pyproject-build-system)
    (native-inputs
     (list cmake-minimal
-           pybind11
+           pybind11-2
           python-pandas
           python-pytest
           python-scipy
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -3252,7 +3252,7 @@ and gene expression visualization.")
                             python-scipy
                             python-threadpoolctl
                             python-umap-learn))
-    (native-inputs (list pybind11 python-pytest python-setuptools))
+    (native-inputs (list pybind11-2 python-pytest python-setuptools))
    (home-page "https://github.com/tanaylab/metacells.git")
    (synopsis "Single-cell RNA Sequencing Analysis")
    (description "The metacells package implements the improved metacell
@@ -23875,7 +23875,7 @@ instruments, or Pacific Biosciences RSII or Sequel sequencers.")
    (inputs
     (list curl zlib))
    (propagated-inputs
-     (list pybind11))
+     (list pybind11-2))
    (home-page "https://github.com/aidenlab/straw")
    (synopsis "Stream data from .hic files")
    (description "Straw is library which allows rapid streaming of contact
@@ -24006,7 +24006,7 @@ e.g. from GenBank or Gff files, or Biopython SeqRecords.")
          ;; dependencies.
          (delete 'sanity-check))))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-pytest
           python-pypairix
           python-setuptools
@@ -24072,7 +24072,7 @@ browser.")
                 "-DCMAKE_CXX_FLAGS=\"-I ../vendor/cereal/include/\" -fPIC"
                 "..")
                (invoke "make")))))))
-    (propagated-inputs (list pybind11))
+    (propagated-inputs (list pybind11-2))
    (native-inputs (list cmake-minimal python-setuptools))
    (home-page "https://github.com/nanoporetech/pyspoa")
    (synopsis "Python bindings for the SIMD partial order alignment library")
@@ -24159,7 +24159,7 @@ aligner.")
           python-scipy
           python-umap-learn
           ;; [optional]
-           pybind11
+           pybind11-2
           python-hnswlib
           python-igraph
           python-louvain))
--- a/gnu/packages/chemistry.scm
+++ b/gnu/packages/chemistry.scm
@@ -100,7 +100,7 @@
           mmtf-cpp
           googletest
           pkg-config
-           pybind11))
+           pybind11-2))
    (inputs
      `(("glew" ,glew)
        ("libarchive" ,libarchive)
--- a/gnu/packages/computer-architecture.scm
+++ b/gnu/packages/computer-architecture.scm
@@ -136,7 +136,7 @@
           hdf5
           libpng
           protobuf
-           pybind11
+           pybind11-2
           python
           python-ply
           python-pydot
--- a/gnu/packages/duckdb.scm
+++ b/gnu/packages/duckdb.scm
@@ -129,7 +129,7 @@ single-file databases with support for secondary indexes.")
    (propagated-inputs
     (list python-adbc-driver-manager))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-fsspec
           ;; python-google-cloud-storage ;python-grpcio fails (see: guix/guix#1436)
           python-numpy
--- a/gnu/packages/electronics.scm
+++ b/gnu/packages/electronics.scm
@@ -1740,7 +1740,7 @@ layout of a circuit corresponds to the desired netlists.")
      (inputs
       (list boost
             eigen
-             pybind11
+             pybind11-2
             qtimgui))
      (synopsis
       "Place-and-Route tool for @acronym{FPGA, Field Programmable Gate Array}")
@@ -2084,7 +2084,7 @@ architecture from Cologne Chip.  It also provides data needed to produce a
              (lambda _
                (chdir "libtrellis"))))))
      (native-inputs (list python-minimal-wrapper))
-      (inputs (list openocd boost-1.88 pybind11))
+      (inputs (list openocd boost-1.88 pybind11-2))
      (synopsis "Placement and routing for ECP5 FPGAs")
      (description
       "Project Trellis is a Nextpnr backend compatible with ECP5 FPGAs.
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -5298,7 +5298,7 @@ forward kinematics solvers.")
    (source
     (origin
       (inherit (package-source orocos-kinematics-dynamics))))
-    (native-inputs (list python pybind11 python-psutil))
+    (native-inputs (list python pybind11-2 python-psutil))
    (inputs (list orocos-kinematics-dynamics))
    (arguments
     (list
--- a/gnu/packages/geo.scm
+++ b/gnu/packages/geo.scm
@@ -941,7 +941,7 @@ OpenGeoSys")
    (native-inputs
     (list git
           ninja
-           pybind11))
+           pybind11-2))
    (inputs
     (list boost
           eigen
--- a/gnu/packages/graphics.scm
+++ b/gnu/packages/graphics.scm
@@ -916,7 +916,7 @@ baking tools to produce normal maps.")
           clang
           flex
           llvm
-           pybind11
+           pybind11-2
           python-wrapper))
    (inputs
     (list boost-1.83
@@ -1736,7 +1736,7 @@ with strong support for multi-part, multi-channel use cases.")
           openjpeg
           ;; openvdb ; OpenVDB needs OIIO to be built with C++17 or higher
           pugixml
-           pybind11
+           pybind11-2
           python-wrapper
           robin-map
           zlib))
--- a/gnu/packages/image-processing.scm
+++ b/gnu/packages/image-processing.scm
@@ -324,7 +324,7 @@ licences similar to the Modified BSD licence."))))
    (native-inputs
     ;; XXX: OCIO has unit tests for OpenShadingLanguage, but they fail.
     ;; They also require OIIO, but OCIO is an optional dependency to it.
-     (list pybind11 python-wrapper))
+     (list pybind11-2 python-wrapper))
    (inputs
     (list expat
           freeglut
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -439,7 +439,7 @@ CTranslate2, which is a inference engine for transformer models.")
    (build-system pyproject-build-system)
    (propagated-inputs (list python-numpy python-scipy))
    (inputs (list fasttext))
-    (native-inputs (list pybind11 python-setuptools python-wheel))))
+    (native-inputs (list pybind11-2 python-setuptools python-wheel))))

 (define-public python-funsor
  (package
@@ -805,7 +805,7 @@ Learning usecases.")
               (find-files (site-packages inputs outputs) "\\.so$")))))))
    (inputs (list eigen-for-python-ml-dtypes))
    (propagated-inputs (list python-numpy))
-    (native-inputs (list pybind11
+    (native-inputs (list pybind11-2
                         python-absl-py
                         python-pytest
                         python-setuptools))
@@ -2047,7 +2047,7 @@ parts of speech and entities, do syntactic analysis, and more.")
     (append
      (list cmake-minimal
            googletest
-            pybind11
+            pybind11-2
            python-fb-re2
            python-parameterized
            python-pytest
@@ -2135,7 +2135,7 @@ operators and standard data types.")
                 (package-transitive-supported-systems pkg)))
       (list python-nbval))))
    (inputs
-     (list onnx protobuf pybind11))
+     (list onnx protobuf pybind11-2))
    (propagated-inputs
     (list python-numpy))
    (synopsis "Library to optimize ONNX models")
@@ -2257,7 +2257,7 @@ with a single function call.")
           nlohmann-json
           onnx
           protobuf
-           pybind11
+           pybind11-2
           re2-next
           safeint
           zlib))
@@ -2426,7 +2426,7 @@ than 8 bits, and at the end only some significant 8 bits are kept.")
           libwebp
           libx11
           openblas
-           pybind11
+           pybind11-2
           zlib))
    (synopsis
     "Toolkit for making machine learning and data analysis applications in
@@ -3791,7 +3791,7 @@ find_library(ML_DTYPES_LIBRARIES
    (native-inputs
     (list pkg-config
           googletest
-           pybind11
+           pybind11-2
           python-setuptools
           python-wrapper               ;for its /bin
           swig-4.0
@@ -4543,7 +4543,7 @@ multiplications and convolution library for server-side inference.")
        ;; There are no tests
        #:tests? #f))
      (inputs (list libuv))
-      (native-inputs (list googletest pkg-config pybind11 libnop))
+      (native-inputs (list googletest pkg-config pybind11-2 libnop))
      (home-page "https://github.com/pytorch/tensorpipe")
      (synopsis "Tensor-aware point-to-point communication primitive for
 machine learning")
@@ -5190,7 +5190,7 @@ PyTorch.")
            openssl ; for cpp-httplib
            pthreadpool
            protobuf
-            pybind11
+            pybind11-2
            ;; qnnpack
            qnnpack-pytorch
            rdma-core
@@ -5906,7 +5906,7 @@ implementations and an easy-to-use API to create custom metrics.  It offers:
           python-pillow
           python-pytorch))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-pytest
           python-setuptools
           python-wheel
@@ -6186,7 +6186,7 @@ models on CPU and GPU.")
    (native-inputs (list ctranslate2
                         python-setuptools
                         python-wheel
-                         pybind11
+                         pybind11-2
                         python-pyyaml
                         python-numpy))))

@@ -6324,7 +6324,7 @@ a Qt interface for Argos Translate.")
    (propagated-inputs
     (list python-numpy python-scikit-learn python-scipy))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-pytest
           python-setuptools
           python-setuptools-scm
@@ -7120,7 +7120,7 @@ add_subdirectory[(][.][.]/[.][.]/dlib/external/pybind11 pybind11_build[)]")
     (list cmake-minimal
           perl
           pkg-config
-           pybind11
+           pybind11-2
           python-pytest
           python-setuptools))))

--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -4367,7 +4367,7 @@ primes and prime k-tuplets up to 264.")
                                               "/include/eigen3/")
                                "\"],"))))))))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-matplotx
           python-perfplot
           python-pytest
@@ -4483,7 +4483,7 @@ programming language.")
              (setenv "DUCC0_OPTIMIZATION" "portable-strip"))))))
    (native-inputs
     (list cmake-minimal
-           pybind11
+           pybind11-2
           python-nanobind
           python-pytest
           python-pytest-xdist
--- a/gnu/packages/networking.scm
+++ b/gnu/packages/networking.scm
@@ -559,7 +559,7 @@ components.")
            libtiff
            libyaml
            libyuv
-            pybind11
+            pybind11-2
            python-jinja2
            python-ply
            qtbase)
--- a/gnu/packages/opencl.scm
+++ b/gnu/packages/opencl.scm
@@ -355,7 +355,7 @@ A lexer, @code{pytools.lex}.
    (native-inputs
     (list cmake-minimal
           pocl
-           pybind11
+           pybind11-2
           python-mako
           python-nanobind
           python-pytest
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -1839,7 +1839,7 @@ foundation for the Mamba package manager.")
     (list cmake-minimal
           ninja
           pkg-config
-           pybind11
+           pybind11-2
           python-scikit-build
           python-pytest
           python-setuptools))
--- a/gnu/packages/physics.scm
+++ b/gnu/packages/physics.scm
@@ -225,7 +225,7 @@ Version: ~a
     (list catch2-3
           cmake-minimal
           highfive
-           pybind11
+           pybind11-2
           python-wrapper
           python-setuptools
           python-setuptools-scm))
@@ -275,7 +275,7 @@ scattering simulations.")
                (for-each (lambda (test)
                            (invoke "python" test))
                          (find-files "tests" "^test_.*\\.py$"))))))))
-    (native-inputs (list pybind11 python-setuptools cmake python-pytest
+    (native-inputs (list pybind11-2 python-setuptools cmake python-pytest
                         python-numpy))
    (inputs (list eigen))
    (home-page "https://github.com/ralna/gofit")
--- a/gnu/packages/python-check.scm
+++ b/gnu/packages/python-check.scm
@@ -5151,7 +5151,7 @@ unused.")
    (native-inputs
     (list cmake-minimal
           ninja
-           pybind11
+           pybind11-2
           python-pytest-bootstrap
           python-scikit-build
           python-setuptools))
--- a/gnu/packages/python-science.scm
+++ b/gnu/packages/python-science.scm
@@ -190,7 +190,7 @@
                                   (number->string (parallel-job-count))
                                   "1")
                          "-E" (string-join ignored-tests "|")))))))))
-    (native-inputs (list openssh-sans-x python python-numpy pybind11 zip))
+    (native-inputs (list openssh-sans-x python python-numpy pybind11-2 zip))
    (inputs (list gsl hdf5 openmpi postgresql))
    (propagated-inputs (list python-pyyaml)) ;for the Python bindings
    (home-page "http://pyre.orthologue.com/")
@@ -574,7 +574,7 @@ higher scores.")
    ;; a way to use a system library.
    (propagated-inputs (list python-numpy))
    (native-inputs (list cmake-minimal
-                         pybind11
+                         pybind11-2
                         python-pytest
                         python-pytest-benchmark
                         python-scikit-build-core
@@ -812,7 +812,7 @@ it can be used for displaying many qualitatively different samples.")
                            ;; verbose=True for more information.
                            "TestOpRelConeQuad::test_oprelcone_2")))))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-pytest
           python-setuptools))
    (propagated-inputs
@@ -1468,7 +1468,7 @@ Features:
     (list #:test-flags #~(list "-k" "not test_interactive_pyside6")))
    (native-inputs
     (list cmake-minimal
-           pybind11
+           pybind11-2
           python-annotated-types
           python-boost-histogram
           python-ipykernel
@@ -2363,7 +2363,7 @@ web, by sharing data and other research outputs.")
    (native-inputs
     (list cmake-minimal
           osqp
-           pybind11
+           pybind11-2
           python-pytest
           python-pytorch
           python-scikit-build-core
@@ -2501,7 +2501,7 @@ different units.")
              (delete-file-recursively "pyamg"))))))
    (build-system pyproject-build-system)
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-cppheaderparser
           python-pytest
           python-pyyaml
@@ -2690,7 +2690,7 @@ or as a TikZ file for use in LaTeX documents;
    (build-system pyproject-build-system)
    (native-inputs
     (list cmake-minimal
-           pybind11
+           pybind11-2
           python-pytest
           python-setuptools))
    (propagated-inputs (list python-numpy python-scipy))
@@ -2929,7 +2929,7 @@ genetic variation data.")
                             python-pathspec
                             python-tomli
                             python-typing-extensions))
-    (native-inputs (list pybind11
+    (native-inputs (list pybind11-2
                         python-cattrs
                         python-fastjsonschema
                         python-hatch-fancy-pypi-readme
@@ -3419,7 +3419,7 @@ cross-validation.")
    (inputs
     (list boost-1.88
           openblas
-           pybind11
+           pybind11-2
           qhull
           xsimd))
    (propagated-inputs
@@ -4740,7 +4740,7 @@ readable.")
                (("#include <nonstd/string_view.hpp>")
                 "#include <cstdint>\n#include <nonstd/string_view.hpp>")))))))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-cython
           python-setuptools))
    (inputs
@@ -5869,7 +5869,7 @@ science including tools for accessing data sets in Python.")
                "12i68jj9n1qj9phjnj6f0kmfhlsd3fqjlk9p6d4gs008azw5m8yn"))))
    (build-system pyproject-build-system)
    (propagated-inputs (list python-numpy-1))
-    (native-inputs (list pybind11 python-pytest python-setuptools))
+    (native-inputs (list pybind11-2 python-pytest python-setuptools))
    (home-page "https://github.com/nschloe/pyfma")
    (synopsis "Fused multiply-add for Python")
    (description "@code{pyfma} provides an implementation of fused
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -542,7 +542,7 @@ compare against a vast section of other version formats.")
    ;; tests: 22304 passed, 524 skipped
    (native-inputs
     (list cmake-minimal
-           pybind11
+           pybind11-2
           python-pytest
           python-scikit-build-core))
    (propagated-inputs
@@ -3374,7 +3374,7 @@ into dataclasses.")
              ;; Tests that pass but avoided for load reasons.
              "-k" "not test_filled_random_big and not test_lines_random_big")))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-meson
           python-pytest
           python-wurlitzer))
@@ -5483,7 +5483,7 @@ interface utility to parse @url{https://hjson.github.io/, HJSON}) documents.")
                ((", '-march=native'")
                 "")))))))
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-pytest
           python-setuptools))
    (propagated-inputs
@@ -9242,7 +9242,7 @@ browser.")
    (native-inputs
     (list python-setuptools))
    (inputs
-     (list pybind11
+     (list pybind11-2
           static-abseil-cpp
           python))
    (propagated-inputs
@@ -12075,7 +12075,7 @@ comparison.
    (native-inputs
     (list pkg-config
           python-meson
-           pybind11
+           pybind11-2
           python-pytest
           python-pytest-timeout
           python-pytest-xdist
@@ -12812,7 +12812,7 @@ Python list with elements of type @code{PIL.Image} (from the
        (base32 "0hpnb63xp8yaflah3i1z5azh6mg36rz0liy27km47417w2q72v0c"))))
    (build-system pyproject-build-system)
    (native-inputs
-     (list pybind11
+     (list pybind11-2
           python-attrs
           python-hypothesis
           python-setuptools-scm
@@ -14588,7 +14588,7 @@ connect strings, then issue SQL commands within IPython or IPython Notebook.")
           python-setuptools
           python-wheel
           cmake-minimal
-           pybind11))
+           pybind11-2))
    (home-page "https://github.com/metaopt/optree")
    (synopsis "Optimized PyTree Utilities")
    (description "This package contains operations on PyTrees (a tree made of
@@ -26645,7 +26645,7 @@ commit, but it also includes some other useful statistics.")
 binding is created using the standard @code{ctypes} library.")
    (license license:isc)))

-(define-public pybind11
+(define-public pybind11-2
  (package
    (name "pybind11")
    (version "2.13.6")
--- a/gnu/packages/radio.scm
+++ b/gnu/packages/radio.scm
@@ -1042,7 +1042,7 @@ used by RDS Spy, and audio files containing @dfn{multiplex} signals (MPX).")
           js-mathjax
           orc
           pkg-config
-           pybind11
+           pybind11-2
           python-cheetah
           python-mako
           python-pyzmq
@@ -1140,7 +1140,7 @@ environment.")
          (add-after 'install 'wrap-python
            (assoc-ref py:%standard-phases 'wrap)))))
    (native-inputs
-     (list doxygen pkg-config pybind11 python-mako python-six))
+     (list doxygen pkg-config pybind11-2 python-mako python-six))
    (inputs
     (list airspy
           airspyhf
@@ -1226,7 +1226,7 @@ primitives for SDR (Software Defined Radio).")
       (list cppunit
             doxygen
             pkg-config
-             pybind11
+             pybind11-2
             python-numpy))
      (inputs
       (list boost-1.83
@@ -1278,7 +1278,7 @@ DMR, NXDN, P25, etc.")
    (native-inputs
     (list doxygen
           pkg-config
-           pybind11
+           pybind11-2
           python
           python-numpy
           python-six))
@@ -1332,7 +1332,7 @@ to the fix block above.
          (add-after 'install 'wrap-python
            (assoc-ref py:%standard-phases 'wrap)))))
    (native-inputs
-     (list pkg-config pybind11 python-six))
+     (list pkg-config pybind11-2 python-six))
    (inputs
     (list boost-1.83
           gmp
@@ -2007,7 +2007,7 @@ operators.")
                  googletest
                  libusb
                  mesa
-                  pybind11
+                  pybind11-2
                  python
                  python-numpy
                  soapysdr
--- a/gnu/packages/simulation.scm
+++ b/gnu/packages/simulation.scm
@@ -1220,7 +1220,7 @@ demos = [d for d in demos if d[0].stem not in excludeList]~%"
    (inputs
     (modify-inputs (package-inputs fenics-dolfin)
       (delete "python")
-       (prepend pybind11 python-matplotlib)))
+       (prepend pybind11-2 python-matplotlib)))
    (native-inputs
     (modify-inputs (package-native-inputs fenics-dolfin)
       (prepend cmake-minimal
@@ -1508,7 +1508,7 @@ counters and tunnels).")
          ;; has already been loaded.
          (delete 'sanity-check))))
    (inputs
-     (list fenics openmpi pybind11))
+     (list fenics openmpi pybind11-2))
    (native-inputs
     (list pkg-config
           python-decorator
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -737,7 +737,7 @@ covariance @url{https://github.com/vnmabus/dcor#sr14,[SR14]}
    (build-system pyproject-build-system)
    (native-inputs
     (list cmake-minimal ;TODO: propagate from python-scikit-build-core
-           pybind11
+           pybind11-2
           python-pytest
           python-scikit-build-core))
    (propagated-inputs
@@ -1108,7 +1108,7 @@ sampler for Markov chain Monte Carlo (MCMC).")
    (build-system pyproject-build-system)
    (native-inputs
     (list cmake-minimal
-           pybind11
+           pybind11-2
           python-pytest
           python-scikit-build-core
           python-setuptools-scm))
--- a/gnu/packages/syndication.scm
+++ b/gnu/packages/syndication.scm
@@ -478,7 +478,7 @@ to create RSS feeds for websites that don't provide any.")
                (sha256
                 (base32 "1fl362920n6nz4x9wihyzbr82d9cy60sknhmajj62whd5gs49sbw"))))
      (build-system meson-build-system)
-      (inputs (list fmt tidy-html pybind11 python pugixml))
+      (inputs (list fmt tidy-html pybind11-2 python pugixml))
      (native-inputs (list cmake-minimal pkg-config)) ; need cmake to find pybind11
      (home-page "https://gitlab.com/gabmus/syndication-domination")
      (synopsis "RSS/Atom feed parser")