#5737 [Core feature] Generic alias support Issue created by wild-endeavor ### Motivation: Why do you think this is important? flytekit currently does not have generic alias support. That is, while this works @task def t1(nodelist: List[int] | None = None): print(nodelist) this does not @task def t2(nodelist: list[int] | None = None): print(nodelist) If you try to run this, you get the error

isinstance() argument 2 cannot be a parameterized generic

that's mentioned in docs for standard types. ### Propose: Link/Inline OR Additional context The usage of isinstance is currently coming from the

assert_type

call in the type engine. Kinda worked around that in here https://github.com/flyteorg/flytekit/pull/2743/files and got the trivial case above working but additional tests and more complex cases need to be considered. ### Are you sure this issue hasn't been raised already? • Yes ### Have you read the Code of Conduct? • Yes flyteorg/flyte