A type template-argument is dependent if the type it specifies is dependent.
A non-type template-argument is dependent if its type is dependent or the constant expression it specifies is value-dependent.
Furthermore, a non-type template-argument is dependent if the corresponding non-type template-parameter is of reference or pointer type and the template-argument designates or points to a member of the current instantiation or a member of a dependent type.
A template template-argument is dependent if it names a template-parameter or is a qualified-id that refers to a member of an unknown specialization.