The setuptools-scm packages gained a setup hook, that sets it to the
derivation version automatically, so setting it to that manually has
become redundant.
This also affects downstream consumers of setuptools-scm, like hatch-vcs
or flit-scm.
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.
