So, I also write Go and I don't get the part about tooling. I don't need formatters or linters as I'm adult enough to know how to format my code (in fact I dislike tools doing it for me). D also has dub, which is fine, as far as package managers go. The ecosystem is the only issue and Go does arguably have a lot of very cool libraries for virtually anything, but outside of webdev, I can't see myself using them. This is why D works a lot better for projects where I don't need all those dependencies and would do better without them.