Re: Understanding "Error: cannot evaluate at compile time"

[Hlaaftana]

The issue is typedesc/static in template is slightly broken, see [issue 
1](https://github.com/nim-lang/Nim/issues/14053) (this exact issue), [issue 
2](https://github.com/nim-lang/Nim/issues/13527) (points out a case where 
static works and typedesc doesnt), [issue 
3](https://github.com/nim-lang/Nim/issues/7160) (this exact issue for typedesc).