Support subscription of Callable[Concatenate[P], Any]
with ...
in Python 3.10
#479
+46
−8
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Fixes #48 for python 3.10.3+
The first versions 3.10.0 - 3.10.2 did not enforce restrictions on the last parameter of _ConcatenateGenericAlias. 3.10.3-3.10.* only support ParamSpec, i.e. no Ellipsis, hence #48 also holds for these versions.
This PR adds a backport of
_ConcatenateGenericAlias
which overrrides the problematiccopy_with
method.Concatenate
but does not fix it fully (see the skipped test)