Package: python-numpy Version: 1:1.13.3-2 Severity: normal I guess it is a rare usecase since I haven't spotted another bugreport, and we have managed to miss it for a while I guess.
dh_python2 installs built .so extensions with a arch specific suffix, e.g.: neurodebian@smaug ~/deb/builds/pymvpa2/2.6.3-1 % grep dh_python2.*so pymvpa2_2.6.3-1_amd64.build I: dh_python2 fs:322: renaming _svmc.so to _svmc.x86_64-linux-gnu.so I: dh_python2 fs:322: renaming smlrc.so to smlrc.x86_64-linux-gnu.so and in pymvpa2 we have been using numpy.ctypeslib.load_library to load them afterwards, but apparently [1,2] it failed to load them for a while, and that is due to following code in load_library: so_ext3 = '.%s-%s.so' % (sysconfig.get_config_var('SOABI'), sysconfig.get_config_var('MULTIARCH')) which is correct for python3, but wouldn't work in python2 since SOABI is not defined, so we end up looking for .None-x86_64-linux-gnu.so : $> strace -f python -c 'from numpy.ctypeslib import load_library; print(load_library("libXXX", "/"))' 2>&1 | grep libXXX [pid 7542] stat("/libXXX.None-x86_64-linux-gnu.so", 0x7fffe43276b0) = -1 ENOENT (No such file or directory) [pid 7542] stat("/libXXX.so", 0x7fffe43276b0) = -1 ENOENT (No such file or directory) I am not sure about "correct" way to address it, but a quick workaround would be in python2, do not prepend SOABI. Or alternatively, do not prepend if sysconfig.get_config_var('SOABI') is not defined altogether [1] https://github.com/PyMVPA/PyMVPA/issues/564 [2] https://github.com/PyMVPA/PyMVPA/issues/568 -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (600, 'unstable'), (300, 'experimental'), (100, 'unstable-debug'), (100, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages python-numpy depends on: ii libatlas3-base [liblapack.so.3] 3.10.3-5 ii libblas3 [libblas.so.3] 3.7.1-4 ii libc6 2.26-2 ii liblapack3 [liblapack.so.3] 3.7.1-4 ii libopenblas-base [liblapack.so.3] 0.2.20+ds-4 ii python 2.7.14-4 ii python2.7 2.7.14-4 python-numpy recommends no packages. Versions of packages python-numpy suggests: ii gcc 4:7.2.0-1d1 ii gfortran 4:7.2.0-1d1 ii python-dev 2.7.14-4 ii python-nose 1.3.7-3 ii python-numpy-dbg 1:1.13.3-2 pn python-numpy-doc <none> -- no debconf information