Describe the bug

Cannot convert typed memoryviews between equivalent types.

Code to reproduce the behaviour:

ctypedef int T

cdef f(int[:] x):
    cdef T[:] y
    y = x

Expected behaviour

It should work because T is just an alias of int.
But Cython complains that Memoryview 'int[:]' not conformable to memoryview 'T[:]'

OS

Windows

Python version

3.10.10

Cython version

3.0.0.b2

Additional context

No response