This package provides the following services:
nuclide-test-runner-pytest package
This is a py.test test runner plugin for Atom. This plugin cannot run on its own. It is a test runner service provider for Nuclide IDE's Test Runner.
If you want to run tests in atom, you have to install nuclide-test-runner also:
apm install nuclide-test-runner
You do not need other nuclide packages.
For best experience, you also should install language-ansi:
apm install language-ansi
The shipped ANSI highlighting of nuclide test runner has bugs.