Passing wrong number of arguments to generic produces runtime errors

In pypa/hatch#2437, we see a change to a generic type, adding an extra parameter, causing a run-time failure, and since this was used in a build plugin, it cause a build failure and my package to fail to install.

pdm.exceptions.BuildError: Build backend raised error: Showing the last 10 lines of the build output:
    class GitInfoBuildHook(BuildHookInterface[Any]):
                           ~~~~~~~~~~~~~~~~~~^^^^^
  File "/usr/lib/python3.12/typing.py", line 398, in inner
    return func(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/typing.py", line 1083, in _generic_class_getitem
    _check_generic(cls, params, len(cls.__parameters__))
  File "/tmp/pdm-build-env-4xoutxun-shared/lib/python3.12/site-packages/typing_extensions.py", line 3274, in _check_generic
    raise TypeError(f"Too {'many' if alen > elen else 'few'} arguments"
TypeError: Too few arguments for <class 'hatchling.builders.hooks.plugin.interface.BuildHookInterface'>; actual 1, expected at least 2

I find this behavior fairly surprising; I would only expect type errors in an annotation to cause errors when doing typechecking, not runtime errors like this.

首先，通过 traceback 中显示的 typing.py 路径复现报告的泛型参数失败，然后比较 typing_extensions.py 中对应的验证逻辑。当针对错误泛型参数数量的预期行为得到确立，并通过回归测试覆盖，同时不破坏有效的运行时 typing 使用时，该问题即得到解决。