https://pastebin.com/QQARqeB9

FWIW, I wrote this without having previous Elm experience—the compiler's error messages are so good that it was mostly trial and error until it worked.

To your point: I think using language primitives for defining views instead of HTML templating is an advantage for Elm because you can write them using only the Elm language itself, without having to learn yet another syntax. Combined with the excellent compiler error messages, it makes writing views easier and less error prone than writing HTML templates.

    showUsers : [User] -> Html msg
    showUsers users = div [id "my-component"] [ul [] (map showUser users)]

    showUser : User -> Html msg
    showUser user = li [] [
        span [class "firstName"] [text user.firstName],
        br [] [],
        span [class "lastName"] [text user.lastName],
      ]

What's even the "good luck!" part for? Good luck knowing about List.map?

  (def users 
   [{:firstname "john", :lastname "snow"} {:firstname "Peter", 
  :lastname "drucker"}])

  (defn my-view 
  []
  [:ul 
  (for [{:keys [firstname lastname]} users]
   [:li firstname " " lastname])])