ports make search key query

Hi,

I'm trying to make a list of ports exclusively *not* for armv6.

I've been trying to use ports(7) but can't seem to get the incantation
right.

this: NOT_FOR_ARCHS

% sudo make -C /usr/ports search key=armv6 display=name,path,arch keylim=1

Port: armv6-freebsd-sysroot-a2021.09.14
Path: /usr/ports/devel/freebsd-sysroot

Port: armv6-rust-bootstrap-1.56.0
Path: /usr/ports/lang/rust-bootstrap

% sudo make -C /usr/ports search key=NOT_FOR_ARCHS display=arch
%

% sudo make -C /usr/ports search key=NOT_FOR_ARCHS display=armv6
%

I'm clearly clueless. What's the proper way to accomplish this?

thanks
-- 
J.