At the moment, we always start a requires-clause in a template-head on a new line, eg:

template<typename T>
  requires is_object_v<T>
struct something {

We should consider whether we can make declarations shorter without sacrificing readability by combining these on the same line:

template<typename T> requires is_object_v<T>
struct something {

Suggestion: someone should try it, produce some before/after screenshots, then we'll make a decision.