message: docs(quickstart): add nix, haskell and datasette
diff: @@ -23,6 +23,9 @@ Learn how to start using Gitpod on an example project that is hosted on GitHub i
  - [Ruby on Rails](/docs/quickstart/ruby-on-rails)
  - [Rust](/docs/quickstart/rust)
  - [Svelte](/docs/quickstart/svelte)
  +- [Datasette](/docs/quickstart/datasette)
  +- [Nix](/docs/quickstart/nix)
  +- [Haskell](/docs/quickstart/haskell)
  ## Installing the Gitpod browser extension
  