Your message dated Fri, 23 Oct 2026 19:10:13 +0200
with message-id <[email protected]>
and subject line Re: Bug#1151758: cftime: FTBFS: ModuleNotFoundError: No module
named 'numpy._core._multiarray_umath'
has caused the Debian Bug report #1151758,
regarding cftime: FTBFS: ModuleNotFoundError: No module named
'numpy._core._multiarray_umath'
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1151758: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1151758
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: src:cftime
Version: 1.6.6.1-1
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/202610/
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:cftime, so that this is still
visible in the BTS web page for this package.
Thanks.
--------------------------------------------------------------------------------
[...]
from . import multiarray
File "/usr/lib/python3/dist-packages/numpy/_core/multiarray.py", line 11, in
<module>
from . import _multiarray_umath, overrides
File "/usr/lib/python3/dist-packages/numpy/_core/overrides.py", line 6, in
<module>
from numpy._core._multiarray_umath import (
ModuleNotFoundError: No module named 'numpy._core._multiarray_umath'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File
"/usr/lib/python3/dist-packages/pyproject_hooks/_in_process/_in_process.py",
line 406, in <module>
main()
File
"/usr/lib/python3/dist-packages/pyproject_hooks/_in_process/_in_process.py",
line 381, in main
json_out["return_val"] = hook(**hook_input["kwargs"])
File
"/usr/lib/python3/dist-packages/pyproject_hooks/_in_process/_in_process.py",
line 286, in build_wheel
return _build_backend().build_wheel(
File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 438, in
build_wheel
return _build(['bdist_wheel'])
File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 429, in
_build
return self._build_with_temp_dir(
File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 410, in
_build_with_temp_dir
self.run_setup()
File "/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 317, in
run_setup
exec(code, locals()) # noqa: S102 # exec is intentional here
File "<string>", line 4, in <module>
File "/usr/lib/python3/dist-packages/numpy/__init__.py", line 112, in <module>
from numpy.__config__ import show_config
File "/usr/lib/python3/dist-packages/numpy/__config__.py", line 4, in <module>
from numpy._core._multiarray_umath import (
File "/usr/lib/python3/dist-packages/numpy/_core/__init__.py", line 85, in
<module>
raise ImportError(msg) from exc
ImportError:
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.
The following compiled module files exist, but seem incompatible
with with either python 'cpython-315' or the platform 'linux':
* _multiarray_umath.cpython-314-x86_64-linux-gnu.so
We have compiled some common reasons and troubleshooting tips at:
https://numpy.org/devdocs/user/troubleshooting-importerror.html
Please note and check the following:
* The Python version is: Python 3.15 from "/usr/bin/python3.15"
* The NumPy version is: "2.4.6"
and make sure that they are the versions you expect.
Please carefully study the information and documentation linked above.
This is unlikely to be a NumPy issue but will be caused by a bad install
or environment on your machine.
Original error was: No module named 'numpy._core._multiarray_umath'
TIP pass --env-dir and --sdist-extract-dir to keep the build environment and
sources, then see
https://build.pypa.io/en/stable/how-to/troubleshooting.html#debug-a-failed-build
for help debugging a failed build
ERROR Backend subprocess exited when trying to invoke build_wheel
E: pybuild pybuild:485: build: plugin pyproject failed with: exit code=1:
python3.15 -m build --skip-dependency-check --no-isolation --wheel --outdir
/<<PKGBUILDDIR>>/.pybuild/cpython3_3.15_cftime
I: pybuild plugin_pyproject:142: Building wheel for python3.14 with "build"
module
I: pybuild base:383: python3.14 -m build --skip-dependency-check --no-isolation
--wheel --outdir /<<PKGBUILDDIR>>/.pybuild/cpython3_3.14_cftime
* Building wheel...
Compiling src/cftime/_cftime.pyx because it changed.
[1/1] Cythonizing src/cftime/_cftime.pyx
running bdist_wheel
running build
running build_py
creating build/lib.linux-x86_64-cpython-314/cftime
copying src/cftime/_strptime.py -> build/lib.linux-x86_64-cpython-314/cftime
copying src/cftime/__init__.py -> build/lib.linux-x86_64-cpython-314/cftime
running egg_info
creating src/cftime.egg-info
writing src/cftime.egg-info/PKG-INFO
writing dependency_links to src/cftime.egg-info/dependency_links.txt
writing requirements to src/cftime.egg-info/requires.txt
writing top-level names to src/cftime.egg-info/top_level.txt
writing manifest file 'src/cftime.egg-info/SOURCES.txt'
dependency
/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/arrayobject.h
won't be automatically included in the manifest: the path must be relative
dependency
/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/arrayscalars.h
won't be automatically included in the manifest: the path must be relative
dependency
/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/ndarrayobject.h
won't be automatically included in the manifest: the path must be relative
dependency
/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/ndarraytypes.h
won't be automatically included in the manifest: the path must be relative
dependency
/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/ufuncobject.h
won't be automatically included in the manifest: the path must be relative
reading manifest file 'src/cftime.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.txt'
warning: no previously-included files found matching '*.legacy'
adding license file 'LICENSE'
writing manifest file 'src/cftime.egg-info/SOURCES.txt'
copying src/cftime/_cftime.c -> build/lib.linux-x86_64-cpython-314/cftime
copying src/cftime/_cftime.pyx -> build/lib.linux-x86_64-cpython-314/cftime
running build_ext
building 'cftime._cftime' extension
x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration
-ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong
-fstack-clash-protection -Wformat -Werror=format-security -fcf-protection
-Wdate-time -D_FORTIFY_SOURCE=2 -fPIC
-DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION
-I/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include
-I/usr/include/python3.14 -c src/cftime/_cftime.c -o
build/temp.linux-x86_64-cpython-314/src/cftime/_cftime.o
x86_64-linux-gnu-gcc -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro -g
-fwrapv -O2 -Wl,-z,relro -Wl,-z,now -g -O2
-Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=.
-fstack-protector-strong -fstack-clash-protection -Wformat
-Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2
build/temp.linux-x86_64-cpython-314/src/cftime/_cftime.o
-L/usr/lib/x86_64-linux-gnu -o
build/lib.linux-x86_64-cpython-314/cftime/_cftime.cpython-314-x86_64-linux-gnu.so
installing to build/bdist.linux-x86_64/wheel
running install
running install_lib
creating build/bdist.linux-x86_64/wheel
creating build/bdist.linux-x86_64/wheel/cftime
copying
build/lib.linux-x86_64-cpython-314/cftime/_cftime.cpython-314-x86_64-linux-gnu.so
-> build/bdist.linux-x86_64/wheel/./cftime
copying build/lib.linux-x86_64-cpython-314/cftime/_strptime.py ->
build/bdist.linux-x86_64/wheel/./cftime
copying build/lib.linux-x86_64-cpython-314/cftime/_cftime.c ->
build/bdist.linux-x86_64/wheel/./cftime
copying build/lib.linux-x86_64-cpython-314/cftime/__init__.py ->
build/bdist.linux-x86_64/wheel/./cftime
copying build/lib.linux-x86_64-cpython-314/cftime/_cftime.pyx ->
build/bdist.linux-x86_64/wheel/./cftime
running install_egg_info
Copying src/cftime.egg-info to
build/bdist.linux-x86_64/wheel/./cftime-1.6.6.1.egg-info
running install_scripts
creating build/bdist.linux-x86_64/wheel/cftime-1.6.6.1.dist-info/WHEEL
creating
'/<<PKGBUILDDIR>>/.pybuild/cpython3_3.14_cftime/.tmp-f9hvvx6_/cftime-1.6.6.1-cp314-cp314-linux_x86_64.whl'
and adding 'build/bdist.linux-x86_64/wheel' to it
adding 'cftime/__init__.py'
adding 'cftime/_cftime.c'
adding 'cftime/_cftime.cpython-314-x86_64-linux-gnu.so'
adding 'cftime/_cftime.pyx'
adding 'cftime/_strptime.py'
adding 'cftime-1.6.6.1.dist-info/licenses/LICENSE'
adding 'cftime-1.6.6.1.dist-info/METADATA'
adding 'cftime-1.6.6.1.dist-info/WHEEL'
adding 'cftime-1.6.6.1.dist-info/top_level.txt'
adding 'cftime-1.6.6.1.dist-info/RECORD'
removing build/bdist.linux-x86_64/wheel
Successfully built cftime-1.6.6.1-cp314-cp314-linux_x86_64.whl
I: pybuild plugin_pyproject:168: Unpacking wheel built for python3.14 with
"installer" module
dh_auto_build: error: pybuild --build -i python{version} -p "3.15 3.14"
--parallel=2 returned exit code 13
make: *** [debian/rules:12: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit
status 2
--------------------------------------------------------------------------------
--- End Message ---
--- Begin Message ---
The python3.15-add transition has started (#1147081), but the dependency chain
of this packages hasn't been rebuilt for it yet.
Kind Regards,
Bas
--
PGP Key ID: 4096R/6750F10AE88D4AF1
Fingerprint: 8182 DE41 7056 408D 6146 50D1 6750 F10A E88D 4AF1
--- End Message ---
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