The discussion that @gertjvr refers to can be found [here](https://github.com/AutoFixture/AutoFixture/pull/158#discussion_r5967727). It is now outdated though..

In the beggining the PR contained two separate projects: AutoFixture.NUnit and AutoFixture.NUnit.Addin.

While the AutoFixture.NUnit project referenced NUnit it wasn't actually using any type defined in the NUnit assembly. It was (and I think still is) a copy and paste of the AutoFixture.xUnit.net source..