failing to install gnuplot 5.4.3 apparently bc of llvm-3.7

[natelsonoptics]

Trying to install gnuplot on an M2 macbook pro running Monterey 12.6.1. I've iterated a few times, and in the end, everything gets hung up on this:

---> Computing dependencies for llvm-3.7. Error: Cannot install llvm-3.7 for the arch 'x86_64' because Error: its dependency libedit cannot build for the required arch. Error: Follow ​https://guide.macports.org/#project.tickets if you believe there is a bug. Error: Processing of port llvm-3.7 failed

Any advice on how to get llvm-3.7 installed as universal or for arm64 explicitly? As far as I can tell, everything else seems to be in place.