todo-app

A simple TODO app in Haskell using PostgREST as a RESTful API for PostgreSQL.

Note

This app is a demo to showcase how developer experience in a Haskell project can be improved using Nix. We primarily use haskell-flake, services-flake and flake-parts to achieve this.

Tutorial

Learn with our blog post series:

• Introduction
• Switch to flake-parts
• Simplify Nix using haskell-flake
• Integrate external services using services-flake
• ...

Getting Started

Install Nix

Development

nix develop

To enter development shell on cd, use direnv

Note

just services starts postgres and postgrest, both of which bind to Unix socket.

just services
# Watch for changes in the Haskell code
just watch

Run through Nix

Note

todo-app-services-tcp starts postgres, which listens on Unix socket, while postgrest listens on TCP port 3000.

nix run github:juspay/todo-app#todo-app-services-tcp
nix run github:juspay/todo-app -- view