Can't install earlier Phoenix version (eg. 1.3.4) than latest stable (eg. 1.4.0) with mix archive.install command.
Solution not achieved according to this thread: https://github.com/phoenixframework/phoenix/issues/2991
$ mix archive.install hex phx_new 1.3.4
** (Mix) No matching version for phx_new 1.3.4 (from: mix.exs) in registry
The latest version is: 1.4.0