settings.json

{
// Add the following to your VS Code settings.json file inside the outer curly braces.
// Make sure each setting ends with a comma!

  // set Haskell formatter to stylish-haskell (install extension first)
  "[haskell]": {
    "editor.defaultFormatter": "vigoo.stylish-haskell",
    // remove this line if you do not want to autoformat when you save
    "editor.formatOnSave": true
  },
  // set font to Fira Code (install font first: https://github.com/tonsky/FiraCode/wiki/Installing)
  "editor.fontFamily": "'Fira Code'",
  // enable font ligatures (install Disable Ligatures extension to disable ligatures when selected)
  "editor.fontLigatures": true,
  // add a vertical ruler
  "editor.rulers": [
    {
        "column": 100,
        "color": "#ff9900"
    }
  ],
  // enable vscode-icons (install vscode-icons extension first)
  "workbench.iconTheme": "vscode-icons",
  // enable Dracula theme (install Dracula Official extension first)
  "workbench.colorTheme": "Dracula"
}