USING: io.unix.backend io.unix.files io.unix.sockets io.unix.launcher io.unix.mmap io.backend combinators namespaces system vocabs.loader ; { { [ macosx? ] [ "io.unix.backend.kqueue" ] } { [ bsd? ] [ "io.unix.backend.kqueue" ] } { [ unix? ] [ "io.unix.backend.select" ] } } cond require T{ unix-io } io-backend set-global