Installation

System wide:

{
  environment.systemPackages = with nix-casks.packages.${system}; [
    font-hack # Hack
  ];
}

Home Manager:

{
  home.packages = with nix-casks.packages.${system}; [
    font-hack # Hack
  ];
}

Package Definition

{
  "pname": "font-hack",
  "version": "3.003",
  "src": {
    "url": "https://github.com/source-foundry/Hack/releases/download/v3.003/Hack-v3.003-ttf.zip",
    "sha256": "0c2604631b1f055041c68a0e09ae4801acab6c5072ba2db6a822f53c3f8290ac"
  },
  "installPhase": [
    "mkdir -p \"$out/Library/Fonts/Hack-Regular.ttf\" && cp -r \"ttf/Hack-Regular.ttf\" \"$out/Library/Fonts\"",
    "mkdir -p \"$out/Library/Fonts/Hack-Italic.ttf\" && cp -r \"ttf/Hack-Italic.ttf\" \"$out/Library/Fonts\"",
    "mkdir -p \"$out/Library/Fonts/Hack-Bold.ttf\" && cp -r \"ttf/Hack-Bold.ttf\" \"$out/Library/Fonts\"",
    "mkdir -p \"$out/Library/Fonts/Hack-BoldItalic.ttf\" && cp -r \"ttf/Hack-BoldItalic.ttf\" \"$out/Library/Fonts\""
  ],
  "meta": {
    "homepage": "https://sourcefoundry.org/hack/"
  }
}