Package: erlang-src

"erlang-src" package binaries on Debian:

/usr/lib/erlang/erts-6.2/bin/erl.src /usr/lib/erlang/erts-6.2/bin/start_erl.src /usr/lib/erlang/erts-6.2/bin/start.src

You may install this package on Debian with apt-get install erlang-src