[Bug 292574] mail/thunderbird 147.0.1: Build failure while configuring

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 02 Feb 2026 01:42:22 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292574

--- Comment #17 from George Mitchell <george@m5p.com> ---
Indeed yes.  I am probably one of (or perhaps THE) most preeminent SCHED_ULE
haters in the community.

Looking a little more into your diagnosis, which is unquestionably correct, I
think this problem is actually in the Pypi package psutil (not to be confused
with our print/psutils package).  So presumably this is an upstream problem.

Is it perhaps too much for me to hope that upstream developers take notice that
the kern.sched.topology_spec sysctl is not available for SCHED_4BSD users? 
There seems to be an active movement at present to make it possible to choose
your scheduler at boot time, and even a more active movement to prevent
SCHED_4BSD from being deprecated.  And an HPC scheduler also seems to be under
way.  Third party software should be aware of these developments.

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