there's another interesting issue on OSX which I've got a patch for in my homebrew version: on OS X, sleeping in a thread can hang, which causes LSP issues for me (through the `lsp-auto-install` package, since it downloads in a thread). The bug thread is interesting, but seems to have petered out; the patch works for me though!

[bug]: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=75275#83 [brew]: https://github.com/d12frosted/homebrew-emacs-plus/compare/ma...

Another example, if you run gunicorn with --preload on Macos, you need to export OBJC_DISABLE_INITIALIZE_FORK_SAFETY and some shenanigans.