in in macports/sources/rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/group/rust-1.0.tcl
581 + if {[option os.platform] eq "darwin" && [option os.major] >= 27} { 582 + rust::append_envs CARGO_PROFILE_DEV_STRIP=none 583 + rust::append_envs CARGO_PROFILE_RELEASE_STRIP=none 584 + }
to get rust to build on macOS 27 on macports for now - otherwise rust is producing bad dylibs the OS won't load 🙃 https://trac.macports.org/ticket/74117 / https://github.com/rust-lang/rust/issues/157750