checkInputs used to be added to nativeBuildInputs. Now we have
nativeCheckInputs to do that instead. Doing this treewide change allows
to keep hashes identical to before the introduction of
nativeCheckInputs.
no longer compatible:
```
File "/build/boto-2.49.0/tests/unit/utils/test_utils.py", line 88, in hmac_hashfunc
return hmac.new(b'mysecretkey', msg)
File "/nix/store/x3655l9x6b5khxzzl0s2zg1kn0qr3zfs-python3-3.9.0/lib/python3.9/hmac.py", line 170, in new
return HMAC(key, msg, digestmod)
File "/nix/store/x3655l9x6b5khxzzl0s2zg1kn0qr3zfs-python3-3.9.0/lib/python3.9/hmac.py", line 56, in __init__
raise TypeError("Missing required parameter 'digestmod'.")
TypeError: Missing required parameter 'digestmod'.
```
