After some further investigation, I have figured out a solution. Changing the build dependency to the -dev package (from libzbar0 to libzbar-dev) has fixed the failing reprotest-kernel job. I tried this out after reading that ctypes.util.find_library is usually used to lookup build-time dependencies rather than run-time dependencies.
Local builds and other reprotest variations work fine without the -dev package. Can someone share some insight into why reprotest-kernel needs the -dev package? Thanks in advance On 5/14/20 9:11 PM, Evangelos Ribeiro Tzaras wrote: > Thank you for your comment > > On 5/14/20 8:47 PM, Geert Stappers wrote: >> On Thu, May 14, 2020 at 07:27:26PM +0200, Evangelos Ribeiro Tzaras wrote: >>> Hello, >>> >>> I have a problem with reprotest on a python package I am building >>> and was recently made aware of this mailinglist. >>> >>> Can anyone tell me what's going on, how I can further debug my issue or >>> ideally how I should fix the issue of a failing reprotest-kernel build? >>> >>> Thanks in advance >>> >>> >>> -------- Forwarded Message -------- >>> Subject: Problem with reprotest-kernel >>> Date: Thu, 14 May 2020 15:44:21 +0200 >>> From: Evangelos Ribeiro Tzaras <dev...@fortysixandtwo.eu> >>> To: debian-python@lists.debian.org >>> >>> Hello, >>> >>> I need some help with a failing reprotest-kernel (other reprotest works) >>> build (both on CI and locally). My package python3-pyzbar provides >>> bindings for libzbar0. >>> The failure occurs while running the build-time tests for >>> build-experiment-1 [1]. >>> >>> Effectively the ImportError is raised here [2]: >>> ctypes.util.find_library('zbar') returns None in build-experiment-1 >>> (testbed still works). >> >> My first impression would be a missing build dependency. >> > > Maybe I am missing something obvious, but why would the build (and the > failing test) succeed in the testbed if a dependency were missing? > >> >>> So far I found out that uname -a prints 4.9.0-12-amd64 for testbed and >>> 2.6.69-12-amd64 for build-experiment-1. On a local build I have seen >>> some "FATAL: kernel too old" messages[3], but they don't show up in the >>> logs[4], so I am wondering if it also happens on the CI but also does >>> not show in the logs. >>> >>> A quick ddg search yielded [5] . Can anyone give me any insights? >>> Because I feel disabling the kernel variation (without fully >>> understanding the issue) is not the winning move here :) >>> >>> Thanks in advance >>> >>> [1] https://salsa.debian.org/devrtz/pyzbar/-/jobs/738921#L1116 >>> [2] >>> https://salsa.debian.org/devrtz/pyzbar/-/blob/master/pyzbar/zbar_library.py#L63 >>> [3] https://fortysixandtwo.eu/img/reprotest_kernel_too_old.png >>> [4] https://fortysixandtwo.eu/img/reprotest_too_old_not_in_log.png >>> [5] >>> http://debian.2.n7.nabble.com/Bug-928921-reprotest-kernel-too-old-SIGSEGV-td4512112.html >>> >> >> >> Groeten >> Geert Stappers >> > > Evangelos Ribeiro Tzaras > Evangelos Ribeiro Tzaras