Bug#1106447: xeus-python: FTBFS: Could not find a configuration file for package "nlohmann_json" that exactly matches requested version "3.11.3".

Sat May 24 17:40:32 BST 2025

Package: src:xeus-python
Version: 0.17.2+~0.6.3-0.1
Severity: serious
Tags: ftbfs trixie sid

Dear maintainer:

During a rebuild of all packages in unstable, your package failed to build:

--------------------------------------------------------------------------------
[...]
 debian/rules clean
dh clean --with python3
   debian/rules override_dh_clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
dh_clean
rm -f share/jupyter/kernels/xpython/kernel.json
rm -f share/jupyter/kernels/xpython-raw/kernel.json
rm -rf .pybuild
rm -rf xeus-python-shell/xeus_python_shell.egg-info
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
 debian/rules binary
dh binary --with python3
   dh_update_autotools_config
   dh_autoreconf

[... snipped ...]

CMAKE_INSTALL_INFODIR:PATH=

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CMAKE_INSTALL_LIBDIR:PATH=lib/x86_64-linux-gnu

//Program executables (libexec)
CMAKE_INSTALL_LIBEXECDIR:PATH=libexec

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CMAKE_INSTALL_LOCALEDIR:PATH=

//Modifiable single-machine data (var)
CMAKE_INSTALL_LOCALSTATEDIR:PATH=/var

//Man documentation (DATAROOTDIR/man)
CMAKE_INSTALL_MANDIR:PATH=

//C header files for non-gcc (/usr/include)
CMAKE_INSTALL_OLDINCLUDEDIR:PATH=/usr/include

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CMAKE_INSTALL_PREFIX:PATH=/usr

//Run-time variable data (LOCALSTATEDIR/run)
CMAKE_INSTALL_RUNSTATEDIR:PATH=/run

//System admin executables (sbin)
CMAKE_INSTALL_SBINDIR:PATH=sbin

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CMAKE_INSTALL_SHAREDSTATEDIR:PATH=com

//Read-only single-machine data (etc)
CMAKE_INSTALL_SYSCONFDIR:PATH=/etc

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CMAKE_LINKER:FILEPATH=/usr/bin/ld

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CMAKE_MAKE_PROGRAM:FILEPATH=/usr/bin/gmake

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CMAKE_MODULE_LINKER_FLAGS:STRING=-Wl,-z,relro

//Flags used by the linker during the creation of modules during
// DEBUG builds.
CMAKE_MODULE_LINKER_FLAGS_DEBUG:STRING=

//Flags used by the linker during the creation of modules during
// MINSIZEREL builds.
CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL:STRING=

//Flags used by the linker during the creation of modules during
// NONE builds.
CMAKE_MODULE_LINKER_FLAGS_NONE:STRING=

//Flags used by the linker during the creation of modules during
// RELEASE builds.
CMAKE_MODULE_LINKER_FLAGS_RELEASE:STRING=

//Flags used by the linker during the creation of modules during
// RELWITHDEBINFO builds.
CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO:STRING=

//Path to a program.
CMAKE_NM:FILEPATH=/usr/bin/nm

//Path to a program.
CMAKE_OBJCOPY:FILEPATH=/usr/bin/objcopy

//Path to a program.
CMAKE_OBJDUMP:FILEPATH=/usr/bin/objdump

//Value Computed by CMake
CMAKE_PROJECT_DESCRIPTION:STATIC=

//Value Computed by CMake
CMAKE_PROJECT_HOMEPAGE_URL:STATIC=

//Value Computed by CMake
CMAKE_PROJECT_NAME:STATIC=xeus-python

//Path to a program.
CMAKE_RANLIB:FILEPATH=/usr/bin/ranlib

//Path to a program.
CMAKE_READELF:FILEPATH=/usr/bin/readelf

//Flags used by the linker during the creation of shared libraries
// during all build types.
CMAKE_SHARED_LINKER_FLAGS:STRING=-Wl,-z,relro

//Flags used by the linker during the creation of shared libraries
// during DEBUG builds.
CMAKE_SHARED_LINKER_FLAGS_DEBUG:STRING=

//Flags used by the linker during the creation of shared libraries
// during MINSIZEREL builds.
CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL:STRING=

//Flags used by the linker during the creation of shared libraries
// during NONE builds.
CMAKE_SHARED_LINKER_FLAGS_NONE:STRING=

//Flags used by the linker during the creation of shared libraries
// during RELEASE builds.
CMAKE_SHARED_LINKER_FLAGS_RELEASE:STRING=

//Flags used by the linker during the creation of shared libraries
// during RELWITHDEBINFO builds.
CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO:STRING=

//No help, variable specified on the command line.
CMAKE_SKIP_INSTALL_ALL_DEPENDENCY:UNINITIALIZED=ON

//If set, runtime paths are not added when installing shared libraries,
// but are added when building.
CMAKE_SKIP_INSTALL_RPATH:BOOL=NO

//If set, runtime paths are not added when using shared libraries.
CMAKE_SKIP_RPATH:BOOL=NO

//Flags used by the linker during the creation of static libraries
// during all build types.
CMAKE_STATIC_LINKER_FLAGS:STRING=

//Flags used by the linker during the creation of static libraries
// during DEBUG builds.
CMAKE_STATIC_LINKER_FLAGS_DEBUG:STRING=

//Flags used by the linker during the creation of static libraries
// during MINSIZEREL builds.
CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL:STRING=

//Flags used by the linker during the creation of static libraries
// during NONE builds.
CMAKE_STATIC_LINKER_FLAGS_NONE:STRING=

//Flags used by the linker during the creation of static libraries
// during RELEASE builds.
CMAKE_STATIC_LINKER_FLAGS_RELEASE:STRING=

//Flags used by the linker during the creation of static libraries
// during RELWITHDEBINFO builds.
CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO:STRING=

//Path to a program.
CMAKE_STRIP:FILEPATH=/usr/bin/strip

//Path to a program.
CMAKE_TAPI:FILEPATH=CMAKE_TAPI-NOTFOUND

//If this value is on, makefiles will be generated without the
// .SILENT directive, and all commands will be echoed to the console
// during the make.  This is useful for debugging only. With Visual
// Studio IDE projects all commands are done without /nologo.
CMAKE_VERBOSE_MAKEFILE:BOOL=ON

//No help, variable specified on the command line.
FETCHCONTENT_FULLY_DISCONNECTED:UNINITIALIZED=ON

//Overwrite cached values read from Python library (classic search).
// Turn off if cross-compiling and manually setting these values.
PYBIND11_PYTHONLIBS_OVERWRITE:BOOL=ON

//Python version to use for compiling modules
PYBIND11_PYTHON_VERSION:STRING=

//Path to a program.
PYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3

//Path to a library.
PYTHON_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.13.so

//Split xpython build into executable and library
XPYT_BUILD_SHARED:BOOL=OFF

//Build xeus-python static library
XPYT_BUILD_STATIC:BOOL=ON

//xeus-python test suite
XPYT_BUILD_TESTS:BOOL=OFF

//Build the xpython executable
XPYT_BUILD_XPYTHON_EXECUTABLE:BOOL=ON

//Build the xpython extension module
XPYT_BUILD_XPYTHON_EXTENSION:BOOL=OFF

//No help, variable specified on the command line.
XPYT_DISABLE_ARCH_NATIVE:UNINITIALIZED=1

//No help, variable specified on the command line.
XPYT_DISABLE_TUNE_GENERIC:UNINITIALIZED=1

//Build for wasm with emscripten
XPYT_EMSCRIPTEN_WASM_BUILD:BOOL=OFF

//Enable warning on PyPI wheels
XPYT_ENABLE_PYPI_WARNING:BOOL=OFF

//Link xpython or xpython_extension with the xeus shared library
// (instead of the static library)
XPYT_USE_SHARED_XEUS:BOOL=ON

//Link xpython and xpython_extension with the xeus-python shared
// library (instead of the static library)
XPYT_USE_SHARED_XEUS_PYTHON:BOOL=OFF

//The directory containing a CMake configuration file for nlohmann_json.
nlohmann_json_DIR:PATH=nlohmann_json_DIR-NOTFOUND

//The directory containing a CMake configuration file for pybind11.
pybind11_DIR:PATH=/usr/lib/cmake/pybind11

//The directory containing a CMake configuration file for pybind11_json.
pybind11_json_DIR:PATH=/usr/share/cmake/pybind11_json

//Value Computed by CMake
xeus-python_BINARY_DIR:STATIC=/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu

//Value Computed by CMake
xeus-python_IS_TOP_LEVEL:STATIC=ON

//Value Computed by CMake
xeus-python_SOURCE_DIR:STATIC=/<<PKGBUILDDIR>>

//The directory containing a CMake configuration file for xeus-zmq.
xeus-zmq_DIR:PATH=/usr/lib/x86_64-linux-gnu/cmake/xeus-zmq

########################
# INTERNAL cache entries
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CMAKE_CACHEFILE_DIR:INTERNAL=/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu
//Major version of cmake used to create the current loaded cache
CMAKE_CACHE_MAJOR_VERSION:INTERNAL=3
//Minor version of cmake used to create the current loaded cache
CMAKE_CACHE_MINOR_VERSION:INTERNAL=31
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CMAKE_CACHE_PATCH_VERSION:INTERNAL=6
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dh_auto_configure: error: cd obj-x86_64-linux-gnu && DEB_PYTHON_INSTALL_LAYOUT=deb PKG_CONFIG=/usr/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DFETCHCONTENT_FULLY_DISCONNECTED=ON -DCMAKE_INSTALL_RUNSTATEDIR=/run -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=ON "-GUnix Makefiles" -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_LIBDIR=lib/x86_64-linux-gnu -DPYTHON_EXECUTABLE=/usr/bin/python3 -DXPYT_DISABLE_ARCH_NATIVE=1 -DXPYT_DISABLE_TUNE_GENERIC=1 -DCMAKE_BUILD_RPATH_USE_ORIGIN=ON -DXPYT_USE_SHARED_XEUS_PYTHON=OFF -DXPYT_BUILD_SHARED=OFF -DPYTHON_VERSION_MAJOR=3 -DPYTHON_VERSION_MINOR=11 .. returned exit code 1
make[1]: *** [debian/rules:9: override_dh_auto_configure] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:6: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------

The above is just how the build ends and not necessarily the most relevant part.
If required, the full build log is available here:

https://people.debian.org/~sanvila/build-logs/202505/

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 could not 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:xeus-python, so that this is still
visible in the BTS web page for this package.

Thanks.