# Test string interpolation
let
  name = "world";
  x = 42;
  bool_val = true;
in
  {
    # Simple interpolation
    greeting = "Hello ${name}!";

    # Multiple interpolations
    multi = "x is ${x} and name is ${name}";

    # Nested expression
    nested = "Result: ${if bool_val then "yes" else "no"}";

    # Just a string (no interpolation)
    plain = "plain text";
  }