error: 'T' is a value parameter, not a type; introduce a generic type parameter with `$T: Type`
  --> examples/1111-diagnostics-nondollar-type-param-rejected.sx:6:37
   |
 6 | idwrap :: (T: Type, f: Closure() -> T) -> T { return f(); }
   |                                     ^

error: 'T' is a value parameter, not a type; introduce a generic type parameter with `$T: Type`
  --> examples/1111-diagnostics-nondollar-type-param-rejected.sx:6:43
   |
 6 | idwrap :: (T: Type, f: Closure() -> T) -> T { return f(); }
   |                                           ^