feat(nix): move Nix configuration to root level

hosts/mac-mini/configuration.nix

@@ -0,0 +1,14 @@
+{ pkgs, config, ... }:
+
+{
+  imports = [
+    ../../darwin
+  ];
+
+  users.users.kogakure = {
+    name = "kogakure";
+    home = "/Users/kogakure";
+  };
+
+  homebrew = import ./homebrew.nix;
+}

hosts/mac-mini/home.nix

@@ -0,0 +1,17 @@
+{ pkgs, ... }:
+
+{
+  imports = [
+    ../../home
+  ];
+
+  # Services
+  services.yabai.enable = true;
+  services.skhd.enable = true;
+
+  # The home.packages option allows you to install Nix packages into your
+  # environment.
+  home.packages = with pkgs; [
+    discord # All-in-one cross-platform voice and text chat for gamers
+  ];
+}

hosts/mac-mini/homebrew.nix

@@ -0,0 +1,19 @@
+{
+  onActivation.cleanup = "uninstall";
+  taps = [ ];
+  brews = [ ];
+  casks = [
+    "ankerwork" # Webcam & audio device software
+    "daisydisk" # Disk space visualiser
+    "gemini" # Disk space cleaner that finds and deletes duplicated and similar files
+    "handbrake" # Open-source video transcoder. FIX: Broken on nixpks
+    "lbry" # Official client for LBRY, a decentralised file-sharing and payment network
+    "makemkv" # Video format converter (transcoder)
+    "protonvpn" # VPN client focusing on security
+    "raspberry-pi-imager" # # Imaging utility to install operating systems to a microSD card
+    "sweet-home3d" # Interior design application
+    "tor-browser" # Web browser focusing on security
+    "webtorrent" # Torrent streaming application
+  ];
+  masApps = { };
+}