Nix.

I know, I know: It's complicated. But have you heard of AI agents?

But I just onboarded 4 interns on a project where all they had to do was

  1. Install the Nix package manager
  2. Install direnv, enter the project repo, and `direnv allow`
  3. Toolchain, git hooks, MCP servers, in-repo issue tracker, everything is available

Our project manager requested information that was available in the issue tracker. I told her, she could get all her answers by asking our agent, and it'd automatically reference the issue tracker. I figured I'd just need to show her how to install the Nix package manager. But no, she already had it because another project by another team depended on it.

Putting wrong information is README is so outdated when you have programmatic setup of your entire toolchain.