This article explains how to set up a Haskell development environment with VS Code on WSL2 (Ubuntu 20.04).

The following lists are the table of contents about this article.

• Target audience
• Environment
• Preconditions
• Set up the development environment
  • 1. Install
  • 2. Create a project
  • 3. Prepare to enable build the project
  • 4. Check setting up the development environment successful
  • 5. Install VS Code extensions for development with Haskell
• Reference articles

Target audience

• Those who want to set up a Haskell development environment with VS Code on WSL2 (Ubuntu 20.04).

Environment

• Windows 10 (Ver. 21H2, Build. 19044.1526)
• WSL 2 (Ubuntu 20.04 LTS)

Preconditions

• Install WSL 2 (Ubuntu 20.04 LTS) to Windows 10
• Install VS Code to WSL 2

Set up the development environment

1. Install

wget -qO- https://get.haskellstack.org/ | sh

2. Create a project

stack new [your project name]

3. Prepare to enable build the project

cd [your project name]
stack setup
stack build

4. Check setting up the development environment successful

stack exec [your project name]-exe

Setting up has been succeeded when someFunc is shown up after executing the above command.
It is like below.

$ stack exec [your project name]-exe
someFunc

5. Install VS Code extensions for development with Haskell

Finally, install the below extensions after launching VS Code

• Haskell
  Haskell Syntax Highlighting is installed together
• hlint
  haskell-linter is installed together

That’s it!
Enjoy your development life!

Reference articles

Install/upgrade - The Haskell Tool Stack