Re:State of the Common Lisp ecosystem, 2020
by travv0 on Tuesday February 09, 2021 @11:23AM
(#26079324)
If you're referring to bordeaux-threads, that's a compatibility library that gives a consistent interface to the various CL implementations' threading interfaces.
Threads cannot be implemented as a library https://www.hpl.hp.com/techreports/2004/HPL-2004-209.pdf https://dl.acm.org/doi/10.1145/1065010.1065042