This meta-package tracks versions of test tools (e.g. pytest) used in Omnisolver and it's official plugins. Therefore, it reduces the burden of maintaining such dependencies in each repository separately.
You typically don't install omnisolver-test-tools manually. Instead, the package gets installed
whenever you install Omnisolver or one of its official plugins with test requirements, e.g. by
running
pip install omnisolver[test]which is only useful if you plan to run tests or contribute to Omnisolver.