The nixpkgs-unstable channel's programs.sqlite was used to identify
packages producing exactly one binary, and these automatically added
to their package definitions wherever possible.
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.
* dosage: 2018.04.08 -> 2.17
I've assumed maintainership of the expression because there was none.
Using `fetchPypi` rather than `fetchFromGithub` because the Github tarballs
don't contain all the metadata necessary for the installation.
* dosage: Use pytestCheckHook rather than py.test
* dosage: Re-add test dependencies
* dosage: Add setuptools_scm build input
* dosage: Add six dependency
