So I'm working my way through this book: Programming Erlang: Software for a Concurrent World http://pragprog.com/titles/jaerlang/programming-erlang
mark_holton ~$ sudo port install erlang
---> Fetching gawk
---> Attempting to fetch gawk-3.1.6.tar.bz2 from http://mirrors.kernel.org/gnu/gawk
---> Verifying checksum(s) for gawk
---> Extracting gawk
---> Configuring gawk
---> Building gawk
---> Staging gawk into destroot
---> Installing gawk @3.1.6_0
---> Activating gawk @3.1.6_0
---> Cleaning gawk
---> Fetching tcl
---> Attempting to fetch tcl8.5.6-src.tar.gz from http://superb-west.dl.sourceforge.net/tcl
---> Verifying checksum(s) for tcl
---> Extracting tcl
---> Configuring tcl
---> Building tcl
---> Staging tcl into destroot
---> Installing tcl @8.5.6_0
---> Activating tcl @8.5.6_0
---> Cleaning tcl
---> Fetching tk
---> Attempting to fetch tk8.5.6-src.tar.gz from http://superb-west.dl.sourceforge.net/tcl
---> Verifying checksum(s) for tk
---> Extracting tk
---> Configuring tk
---> Building tk
---> Staging tk into destroot
---> Installing tk @8.5.6_0
---> Activating tk @8.5.6_0
---> Cleaning tk
---> Fetching erlang
---> Attempting to fetch otp_src_R12B-5.tar.gz from http://distfiles.macports.org/erlang
---> Attempting to fetch otp_doc_man_R12B-5.tar.gz from http://distfiles.macports.org/erlang
---> Attempting to fetch otp_doc_html_R12B-5.tar.gz from http://distfiles.macports.org/erlang
---> Verifying checksum(s) for erlang
---> Extracting erlang
---> Applying patches to erlang
---> Configuring erlang
---> Building erlang