Help with generics and typeclass problem

[void09]

So I don't open another topic, I'd like to know if it's possible to use 
std/math ceilDiv inside a (generic) type definition, like here: 
<https://play.nim-lang.org/#ix=4wdy> this does not compile, even though const a 
= ceildiv(..) works, so ceildiv is good for compile time. If I write my own 
ceildiv without generics and use that, it works