Installation

System wide:

{
  environment.systemPackages = with nix-casks.packages.${system}; [
    mattr-slate # Slate
  ];
}

Home Manager:

{
  home.packages = with nix-casks.packages.${system}; [
    mattr-slate # Slate
  ];
}

Package Definition

{
  "pname": "mattr-slate",
  "version": "1.2.0",
  "src": {
    "url": "https://github.com/mattr-/slate/releases/download/v1.2.0/Slate.zip",
    "sha256": "d409ccda9ed09f5647175f8834650e141a7375ced9665bf6af237525665d4966"
  },
  "installPhase": [
    "mkdir -p \"$out/Applications/Slate.app\" && cp -r \"Slate.app\" \"$out/Applications\""
  ],
  "meta": {
    "homepage": "https://github.com/mattr-/slate"
  }
}