Earlier quoted context omitted.
Is there any Rust outfit out there that doesn't discourage macro use? For that matter, is there any team with a language out there that encourages macro use when working as a team?
I've never seen a team that encouraged writing new macros to solve routine problems. But I've certainly been on teams that made heavy use of a few carefully deployed macros to solve recurring problems specific to that codebase. I think elixir's sigils are probably the closest thing I've seen to "routine, encouraged macro use." Since almost every application will end up with a bit of template lite almost-dsl pseudo la…
So, while macros are "discouraged" in Elixir, in practice they are very much encouraged by several prominent libraries. Picking on Phoenix is very easy because it's so blatantly bad in this regard (and others) but it's almost impossible to do useful things with Ecto if you go outside the macro bubble, etc., as well.
Example that shows how an eco system that definitely could have done stuff with macros (Clojure) has correctly decided that writing functions that take data is better than using macros:
Elixir and `Plug.Router`:
defmodule MyRouter do
use Plug.Router
plug :match
plug :dispatch
get "/hello" do
send_resp(conn, 200, "world")
end
forward "/users", to: UsersRouter
match _ do
send_resp(conn, 404, "oops")
end
end
(def router
(r/routes
[["/hello" {:get (fn [r] {:status 200 :body "world"})}]
["/users" {:name :users
:router users-router}]
["*" {:get (fn [r] {:status 404 :body "oops"})}]]))