macOS: Cannot install pure for the arch 'arm64'

[slavenskoj]

% sudo port install pure pure-docs

Password:
---> Computing dependencies for pure
Error: Cannot install pure for the arch 'arm64' because
Error: its dependency llvm-3.4 only supports the archs 'ppc ppc64 i386 x86_64'.
Error: Follow https://guide.macports.org/#project.tickets if you believe there
is a bug.
Error: Processing of port pure failed

[ryandesign]

I've updated the pure ports to indicate that they don't support arm64 natively. That should allow you to install the port on your arm64 system and receive the x86_64 version, if you wait at least 2 hours from now and then run sudo port selfupdate first.