Example in README does not work ( Latest gleam version )

[Isabelle]

As the title says, if you try to use the example:

Example

import gleam/erlang
import gleam/http/cowboy
import gleam/http/response.{Response}
import gleam/http/request.{Request}
import gleam/bit_builder.{BitBuilder}

// Define a HTTP service
//
pub fn my_service(request: Request(t)) -> Response(BitBuilder) {
  let body = bit_builder.from_string("Hello, world!")

  response.new(200)
  |> response.prepend_header("made-with", "Gleam")
  |> response.set_body(body)
}

// Start it on port 3000!
//
pub fn main() {
  cowboy.start(my_service, on_port: 3000)
  erlang.sleep_forever()
}

Then you will get the following error:

error: Unknown module
  ┌─ ./src/testing_gleam.gleam:1:8
  │
1 │ import gleam/erlang
  │        ^^^^^^^^^^^^

No module has been found with the name `gleam/erlang`.

I have tried to look around and try to fix the error but I couldn't really find anything helpful.

Edit: I installed the gleam_erlang package and that fixed the error, got a new one though.

error: Unknown module
  ┌─ ./src/testing_gleam.gleam:2:8
  │
2 │ import gleam/http/cowboy
  │        ^^^^^^^^^^^^^^^^^ Did you mean `erlang`?

No module has been found with the name `gleam/http/cowboy`.

[Isabelle]

Ok, I fixed the cowboy error by installing gleam_cowboy (please provide some clearer instructions for the readme), but I got a yet another error related to erlang error:

error: Unknown module field
   ┌─ ./src/testing_gleam.gleam:21:9
   │
21 │   erlang.sleep_forever()
   │         ^^^^^^^^^^^^^^ Did you mean `Errored`?

The module `gleam/erlang` does not have a `sleep_forever` field.

[Louis Pilfold]

Thank you, I've updated it now.

You may also want to check out the Mist or Elli servers, they are much faster than Cowboy.