type / typedesc return values are considered void

[mratsim]

This throws a "void" error

func getBaseType(T: typedesc): typedesc =
  T

echo getBaseType(int)

Error: type mismatch: got <void>
but expected one of: 
proc echo(x: varargs[typed, `$`])
  first type mismatch at position: 1
  required type for x: varargs[typed]
  but expression 'getBaseType(int)' is of type: void

expression: echo getBaseType(int)

So workarounding for #16600 will likely involve working with types in macros :/ nim-lang/RFCs#44

[cooldome]

I am afraim returning typedesc procs are not allowed at least now, use templates in such use cases

[mratsim]

With templates I get into identifier not declared problems.