Review

Let's take stock of what we've been afforded with these changes.

• We took advantage of std's integration with numtide/devshell and added a default development shell to our repository
• We created a nice MOTD for our repository, welcoming contributors and making them aware of std and our custom commands
• We added a custom command for running our tests with cargo
• We provided contributors with the latest version of the Rust toolchain

Finally, to wrap things with a bow, we integrated direnv to automagically load us into our new development shell when we cd into our repository root. This is no small feat! The best part is we stayed within std the whole time and yet were still afforded all of these quality-of-life improvements.

The organizational structure provided by std is a huge boon to productivity, but so are the quality-of-life improvements. Contributing to our humble example project just became much easier with development shells, and we'll continue this theme of improvement in the next chapter.