simplex-cheat

simplex-cheat

It's a simplex-chat-like app, but much simpler. There's a server and a spawner that spawns users following a config so that users talk to each other concurrently.

Prerequisites

These might be useful if you'd like to learn Nix and my flakes:

• Prerequisites
• Haskell
• Troubleshooting - see in case of problems with VSCodium, etc.

Quick start

1. Install Nix - see how.

2. Start a devshell and run app.

   • with cabal

     cabal run

   • with nix develop

     nix develop
     cabal run

   • with nix run

     nix run

3. Here's a sample log:

Contribute

1. Start a devshell.

   nix develop    

2. (Optionally) Run VSCodium.

   nix run .#writeSettings
   nix run .#codium .

3. Open a Haskell file and wait until HLS starts giving you type hints.

References

• Servant: Custom monad

• The ReaderT Design Pattern

• Practical STM: An Async Job Queue, by Jake Keuhlen

  • TMVar - don't forget to put a value inside.
  • stdout is a shared resource - can put log into a TVar.