feat(nix): move Nix configuration to root level

darwin/default.nix

@@ -0,0 +1,46 @@
+{ pkgs, config, ... }:
+
+{
+  homebrew = import ./homebrew-common.nix;
+
+  # Auto upgrade nix package and the daemon service.
+  services.nix-daemon.enable = true;
+  services.karabiner-elements.enable = true;
+
+  # Necessary for using flakes on this system.
+  nix.settings.experimental-features = "nix-command flakes";
+  nixpkgs.config.allowUnfree = true;
+
+  # GnuPG
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
+  environment.systemPackages = [ pkgs.pinentry_mac ];
+
+  # Shells
+  environment.shells = with pkgs; [
+    bash
+    zsh
+    fish
+  ];
+
+  programs.zsh.enable = true;
+  programs.fish.enable = true;
+  programs.bash.enable = true;
+
+  # Used for backwards compatibility, please read the changelog before changing.
+  # $ darwin-rebuild changelog
+  system.stateVersion = 4;
+
+  system.defaults.NSGlobalDomain.ApplePressAndHoldEnabled = false;
+  system.defaults.dock.autohide = true;
+
+  system.defaults.NSGlobalDomain.InitialKeyRepeat = 15;
+  system.defaults.NSGlobalDomain.KeyRepeat = 2;
+
+  nixpkgs.hostPlatform = "aarch64-darwin";
+
+  services.skhd.enable = true;
+  services.yabai.enable = true;
+}

darwin/homebrew-common.nix

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+{
+  enable = true;
+  onActivation.cleanup = "uninstall";
+  taps = [
+    "dustinblackman/tap" # Oatmeal
+    "homebrew/bundle" # Bundler for non-Ruby dependencies from Homebrew, Homebrew Cask, Mac App Store, Whalebrew and Visual Studio Code.
+    "homebrew/services" # Manage background services using the daemon manager launchctl on macOS or systemctl on Linux.
+  ];
+  brews = [
+    "cava" # Console-based Audio Visualizer for ALSA
+    "fileicon" # macOS CLI for managing custom icons for files and folders
+    "gettext" # INFO: Dependency of Neovim
+    "libiconv" # INFO: Dependency of nixpkgs_fmt
+    "luajit" # INFO: Dependency of Neovim
+    "neovim" # TODO: Migrate to nix
+    "oatmeal" # Terminal UI to chat with large language models (LLM) using backends such as Ollama, and direct integrations with your favourite editor like Neovim!
+    "prettier" # Code formatter for JavaScript, CSS, JSON, GraphQL, Markdown, YAML
+    "tree-sitter" # INFO: Dependency of Neovim
+    "urlview" # URL extractor/launcher
+  ];
+  casks = [
+    "affinity-designer" # Professional graphic design software
+    "affinity-photo" # Professional image editing software
+    "affinity-publisher" # Professional desktop publishing software
+    "alfred" # Application launcher and productivity software
+    "angry-ip-scanner" # Network scanner
+    "anki" # Memory training application. FIX: Broken on nixpks
+    "arc" # Chromium based browser
+    "bibdesk" # Edit and manage bibliographies
+    "blender" # 3D creation suite. FIX: Installation fails with broken Xcode derivation
+    "blender-benchmark" # 3D performance benchmarking tool
+    "blurred" # Utility to dim background/inactive content in the screen
+    "brave-browser" # Web browser focusing on privacy
+    "calibre" # E-books management software. FIX: Broken on nixpks
+    "cleanshot" # Screen capturing tool
+    "color-oracle" # Tool to test for color-blindness
+    "cryptomator" # Multi-platform client-side cloud file encryption tool
+    "db-browser-for-sqlite" # Browser for SQLite databases
+    "deepl" # Trains AIs to understand and translate texts
+    "devonthink" # Collect, organise, edit and annotate documents
+    "docker" # App to build and share containerised applications and microservices
+    "dropbox" # Client for the Dropbox cloud storage service
+    "figma" # Collaborative team software
+    "firefox" # Web browser
+    "firefox@developer-edition" # Web browser
+    "font-fira-code"
+    "font-fira-code-nerd-font"
+    "font-fira-sans"
+    "font-fira-sans-condensed"
+    "font-hack-nerd-font"
+    "font-ia-writer-duo"
+    "font-ia-writer-mono"
+    "font-ia-writer-quattro"
+    "font-monaspace"
+    "font-noto-emoji"
+    "font-symbols-only-nerd-font"
+    "forticlient-vpn" # Free VPN client for FortiClient
+    "google-japanese-ime" # Japanese input software
+    "gpg-suite-no-mail" # Tools to protect your files
+    "hammerspoon" # Desktop automation application
+    "ia-presenter" # Create presentation slides from a Markdown document
+    "imageoptim" # Tool to optimise images to a smaller size
+    "integrity" # Tool to scan a website checking for broken links
+    "itsycal" # Menu bar calendar
+    "kaleidoscope@3" # Spot and merge differences in text and image files or folders
+    "kap" # Open-source screen recorder built with web technology
+    "languagetool" # Grammar, spelling and style suggestions in all the writing apps
+    "ledger-live" # Wallet desktop application to maintain multiple cryptocurrencies
+    "macfuse" # File system integration
+    "microsoft-outlook" # Email client
+    "microsoft-teams" # Meet, chat, call, and collaborate in just one place
+    "notion" # App to write, plan, collaborate, and get organised
+    "obsidian" # Knowledge base that works on top of a local folder of plain text Markdown files
+    "ogdesign-eagle" # Organise all your reference images in one place
+    "ollama" # Get up and running with large language models locally
+    "philips-hue-sync" # Control your smart light system
+    "proton-drive" # Client for Proton Drive
+    "proton-mail" # Client for Proton Mail and Proton Calendar
+    "proton-pass" # Desktop client for Proton Pass
+    "protonmail-bridge" # Bridges Proton Mail to email clients supporting IMAP and SMTP protocols
+    "raindropio" # All-in-one bookmark manager
+    "raycast" # Control your tools with a few keystrokes
+    "reader" # Save articles to read, highlight key content, and organise notes for review
+    "secretive" # Store SSH keys in the Secure Enclave
+    "send-to-kindle" # Tool for sending personal documents to Kindles from Macs
+    "session" # Onion routing based messenger
+    "sf-symbols" # Tool that provides consistent, highly configurable symbols for apps
+    "signal" # Instant messaging application focusing on security
+    "sonos" # Control your Sonos system
+    "spotify" # Music streaming service
+    "the-unarchiver" # Unpacks archive files
+    "transmit" # File transfer application
+    "veracrypt" # Disk encryption software focusing on security based on TrueCrypt
+    "virtualbox@beta" # Virtualizer for x86 and arm64 hardware
+    "visual-studio-code" # Open-source code editor
+    "vlc" # Multimedia player
+    "vlc-webplugin" # Web browser plugin
+    "wezterm" # GPU-accelerated cross-platform terminal emulator and multiplexer. NOTE: Only installed with Brew because I want to replace the icon
+    "whatsapp" # Native desktop client for WhatsApp
+    "wiso-steuer-2024" # Tax declaration for the fiscal year 2023
+    "zed" # Multiplayer code editor
+  ];
+  masApps = {
+    "1-Click Video Converter" = 717545086; # Video converter
+    "Aiko" = 1672085276; # Audio to text converter with AI
+    "DaVinci Resolve" = 571213070; # Video Editing
+    "Day One" = 1055511498; # Journaling
+    "Deliveries" = 290986013; # Track parcels
+    "Draw Things" = 6444050820; # Stable Diffusion AI art generation
+    "Exporter" = 1099120373; # Export from Apple Notes
+    "Free MP4 Converter" = 693443591; # Video converter
+    "Goodnotes" = 1444383602; # Note-taking
+    "Key Codes" = 414568915; # Keyboard key codes
+    "Kindle" = 302584613; # E-book reader
+    "Mela" = 1568924476; # Recipe manager
+    "MindNode" = 1289197285; # Mind mapping
+    "Numbers" = 409203825; # Spreadsheet
+    "Pages" = 409201541; # Word processor
+    "Proton Pass for Safari" = 6502835663; # Password manager browser extension
+    "Pure Paste" = 1611378436; # Paste plain text by default
+    "Reeder" = 1529448980; # RSS reader
+    "Save to Raindrop.io" = 1549370672; # Bookmark manager browser extension
+    "iA Writer" = 775737590; # Writing
+    "iFinance 5" = 1500241909; # Banking
+    "Time Sink" = 404363161; # Time tracking
+    "Typeface" = 1062679359; # Font manager
+    "Yoink" = 457622435; # Drag and drop
+  };
+}