`specialArgs` in tests?

Development
5

I’m improving the test wiring with the module system:

https://github.com/NixOS/nixpkgs/pull/176557

To add your own configuration to an existing test, you can use the new extend function for tests. defaults and nodes work just like in NixOps.

nixosTests.foo.extend {

  # set any test-level options here, such as `enableOCR`, `meta`, ...

  defaults = { config, lib, ... }: {
    # set any NixOS-level options here, applied to all VMs
  };

  nodes.foo = {
    # set any NixOS-level options here, applied to the `foo` machine only
    # (created if necessary)
  };
}

If nixosTests.foo consists of multiple test cases and/or a test matrix, i.e. multiple derivations, it works exactly the same, requiring no mapAttrs or anything like that.

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