NotImplementedError: Predefining a positional-only argument using keyword is not supported

[smarie]

It seems that since python 3.12.4 (or .1, or .2, or .3 but it was not the case in 3.12.0),

def f(a, b, c, /, *, d, **e):
    return a + b + c + d + sum(e)

# it is possible to keyword-partialize a positional-only argument...
fp_ref = functools.partial(f, b=0)

# but 'signature' does not support it !
if sys.version_info < (3, 12, 4):
    signature(fp_ref)   # <--   raises(ValueError) !!!!
else:
    # Now it works !
    assert str(signature(fp_ref)) == "(a, c, /, *, d, **e)"

# On our end, we used to not support it because signature was not supporting it
makefun.partial(f, b=0)  # Raises `NotImplementedError`

Details: raises NotImplementedError: Predefining a positional-only argument using keyword is not supported as in python 3.8.8, 'signature()' does not support such functions and raises a ValueError

We should probably implement it now