Actually, I take it back, it appears to be sit in this patch.
https://github.com/macports/macports-ports/blob/master/editors/emacs/files/site-start.el

This appears to be a MacPorts packaging issue, you can close this.

Jimmy


On Sun, May 28, 2023 at 10:47 AM Jimmy Yuen Ho Wong <wyuenho@gmail.com>
wrote:

> Nope, it's all automatic. Something somewhere in the NS port is setting
> `treesit-extra-load-path' correctly, despite both ports were compiled with
> LDFLAGS='-L/opt/local/lib'
>
> Jimmy
>
>
> On Sun, May 28, 2023 at 10:42 AM Eli Zaretskii <eliz@gnu.org> wrote:
>
>> > From: Jimmy Yuen Ho Wong <wyuenho@gmail.com>
>> > Date: Sun, 28 May 2023 10:27:16 +0100
>> > Cc: 63762@debbugs.gnu.org
>> >
>> > gdb doesn't work with clang and I have a hard time using lldb, all I
>> can say for sure is, for some
>> > reason, `treesit-extra-load-path' is nil when running TTY emacs on
>> macOS, whereas it is set to '
>> > ("/opt/local/lib") on the NS port.
>>
>> treesit-extra-load-path is nil in my session, and that is its normal
>> value.  How did you get it set to something non-nil in the NS build?
>> I see nothing in the sources, so maybe it's your customizations?
>>
>