yes, this is exactly the problem. no-build-isolation is the last resort which can potentially lead to this sort of trouble.
it's probably fixed in <https://github.com/sagemath/sage/pull/40633>, but there are versions shenanigans there, stemming from our rather outdated way to deal with Python packaging. On August 27, 2025 7:25:13 PM CDT, Richard_L <[email protected]> wrote: >Could the error be related to this message near the end of >matplotlib-3.10.1.log? > >"[spkg-install] Warning: Wheel building needed to use "--no-isolation >--skip-dependency-check" to succeed. This means that a dependencies file in >build/pkgs/ needs to be updated. Please report this to >[email protected], including the build log of this package." > > >On Wednesday, August 27, 2025 at 11:20:26 AM UTC-7 Nils Bruin wrote: > >> On many systems, GCC14 should be fine: Recent linux distributions have now >> moved to GCC15, which is a problem. But then changing the build options to >> use gcc14 works fine (see >> https://groups.google.com/g/sage-devel/c/tJCbTnelvSg/m/IfzQF0HGBQAJ ). On >> those same distributions, sagemath is running fine on Python 3.13. It look >> to me the readme might have not been updated for a while (or for some >> reason you have a really old one ... in which case that could be a lead to >> follow why you're getting inconsistent build results. >> >> On Wednesday, 27 August 2025 at 11:09:22 UTC-7 Richard_L wrote: >> >>> Nils - It's always possible, but I don't see any obvious culprits in my >>> path. OTOH, I do see is that readme calls for "GCC versions from 8.4.0 to >>> 13.x" whereas I'm running gcc 14.3.0. (Has anyone else tested gcc 14.x?) I >>> also see that readme calls for python3 versions "3.9.x to 3.12.x" whereas >>> I'm running python3 3.6.15, which induces a build of python by the build >>> script. Since the symbol in question is in a cpython .so file, the bug may >>> have to do with sage's building of python3-3.12.5 in >>> "~/sage-10.7/local/var/lib/sage/venv-python3.12.5". (Has anyone else tested >>> with the script-built python3-3.12.5?) >>> >>> On Tuesday, August 26, 2025 at 5:32:23 PM UTC-7 Nils Bruin wrote: >>> >>>> A loader symbol lookup error probably means that the dynamic library >>>> loaded during runtime differs from the one that was assumed during compile >>>> time. "agg" is a component of matplotlib, so it could be that the >>>> inconsistency lies within matplotlib itself. Could it be the case that an >>>> old version of a library is hanging around in ~/.local or something like >>>> that, which ends up shadowing the actual (hopefully freshly installed) >>>> version of the library? There are some big changes in the >>>> build/installation system in sage-10.7, so it could be that an artifact >>>> that was previously harmless now gets in the way. While you're waiting for >>>> an expert, you could try and see if building/running in a cleaner >>>> environment makes the problem go away. >>>> >>>> On Tuesday, 26 August 2025 at 16:14:39 UTC-7 Richard_L wrote: >>>> >>>>> 1) Sorry, I forgot to mention, I am building sage-10.7 from source on >>>>> openSUSE-15.6. >>>>> 2) It turns out not to matter whether sage builds matplotlib or if it >>>>> is installed from the OS repository. >>>>> >>>>> Suggestions welcome. >>>>> >>>>> On Tuesday, August 26, 2025 at 8:35:04 AM UTC-7 Richard_L wrote: >>>>> >>>>>> All(?) tests invoking matplotlib show at least one of two error >>>>>> messages. See attachment "plot_fail". However, the build finished and >>>>>> reported success (install.snip), while 'make ptestlong' shows 200+ >>>>>> errors >>>>>> (test.log). Neither matplotllb nor matplotlib-inline report failure. [ >>>>>> Note: install.log too big to attach; therefore the tail of install.log >>>>>> attached here as install.snip. ] >>>>>> Please inform if some other log file is needed to debug this. >>>>>> Thanks >>>>>> >>>>> > >-- >You received this message because you are subscribed to the Google Groups >"sage-devel" group. >To unsubscribe from this group and stop receiving emails from it, send an >email to [email protected]. >To view this discussion visit >https://groups.google.com/d/msgid/sage-devel/9690c7e9-78a8-45f1-b490-37d9003665e8n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/sage-devel/9CEF161C-DF02-49AF-8BD8-40B0741ABC32%40gmail.com.
