https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: dev-python/sympy-1.6.2 fails tests (hang). Discovered on: amd64 (internal ref: tinderbox) NOTE: I had to kill the process.
Created attachment 661750 [details] build.log build log and emerge --info
Suspect both this and theano (bug 738416) are just really _slow_. It's on my list to look at. Excluding slow tests would be something.
(In reply to Sam James from comment #2) > Excluding slow tests would be something. All tests are reasonably fast. But their number is huge. A *very* thorough testing. Excluding one or several tests will change nothing. Excluding a half of tests will make testing run twice as fast, but will make testing twice less thorough. I think it is not good for mathematical software. So, everybody who wants to emerge sympy with FEATURES=test should be prepered to wait for a few hours.
(In reply to Andrey Grozin from comment #3) > (In reply to Sam James from comment #2) > > Excluding slow tests would be something. > All tests are reasonably fast. But their number is huge. A *very* thorough > testing. > Excluding one or several tests will change nothing. Excluding a half of > tests will make testing run twice as fast, but will make testing twice less > thorough. I think it is not good for mathematical software. > So, everybody who wants to emerge sympy with FEATURES=test should be > prepered to wait for a few hours. 1. If it uses pytest, try xdist. 2. I'm specifically referring to ago saying "hang" here, i.e. no new output after a long period. In that case, skipping some small number of tests can be helpful. I'm not referring to total runtime.