New comment by tornaria on void-packages repository https://github.com/void-linux/void-packages/pull/29635#issuecomment-808903869 Comment: > @tornaria Thanks, I'll be fine doing as you propose. Also, adding those packages would be great. > @ericonr I made changes, but feel free to close this if we decide to do otherwise. > My reason was that in sage-9.3.beta9 I get > > ``` > cat build/pkgs/pari/spkg-configure.m4 | grep pthread > AC_MSG_CHECKING([whether pari is configured with pthreads]) > [[return strcmp(PARI_MT_ENGINE, "pthread") != 0]])], > ``` Thanks for pointing this out, I had missed it. This was introduced in sage-9.3-beta9 and there is no reason given. I created https://trac.sagemath.org/ticket/31572 about it. For the moment we can't use system pari because 2.13 is not supported in sagemath (yet), so I would say leave it single thread by default for now. We can figure out how to proceed once the dust settles on that sagemath ticket and pari-2.13 gets supported (it seems not for sage-9.3, unfortunately).