DEVELOPMENT.md

Development recommendations

Before continuing, make sure you've read:

• Alejandro's post on setting up a Haskell development environment.
• Kowainik's Haskell Style Guide.

VSCode extensions

To make our lives easier while developing in Haskell, we use the following extensions:

• ghcide, the best thing that happened to Haskell for editors/IDEs! ❤️
• hlint, another great extension to have suggestions and refactors in Haskell 🛠
• stylish-haskell, the formatter we use to prettify the code 💅🏼
• editorconfig, to have consistency between different editors and envs 🐀

stylish-haskell 💅🏼

Regarding the formatter, we use the master version of stylish-haskell to be able to use language pragmas with lowercase, so you'll need to do this locally:

$ git clone https://github.com/jaspervdj/stylish-haskell
$ ...
$ cd stylish-haskell && stack install

We don't provide any git hook or tool that enforces our style. However, before you propose any PR please make sure to run stylish-haskell yourself, and to follow our style guide mentioned above to the extent possible. 😊

If you wan't to automate this for your VSCode, add the following to your .vscode/settings.json:

{
  "editor.formatOnSave": true
}

Happy hacking! 👏🏼