> +if {${subport} eq "cquery-devel"} {
> + minimum_xcodeversions {16 8.3}
What about this port requires Xcode 8.3 or newer? Are you sure it
isn't instead a requirement on a specific version of clang? If the
latter, use the compiler_blacklist_versions portgroup instead.
macOS 10.12 is the minimum requirement for cquery-devel as
`shared_timed_mutex` isn't available until then. Xcode 8.0 to 8.2.1
might work, but I have no way of testing it.
All the other issues have been addressed
at https://github.com/macports/macports-ports/pull/2000