chore: add a new host and make a few adjustments

hosts/thegeneralist-central-mbp/configuration.nix

@@ -0,0 +1,33 @@
+# Edit this configuration file to define what should be installed on
+# your system. Help is available in the configuration.nix(5) man page, on
+# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
+
+{ self, config, pkgs, lib, inputs, ... }:
+
+{
+  imports = [ ./hardware-configuration.nix ./jellyfin.nix ];
+
+  users.knownUsers = [
+    "central"
+  ];
+
+  users.users.central = {
+    name = "central";
+    home = "/Users/central";
+    shell = pkgs.zsh;
+    uid = 502;
+    openssh.authorizedKeys.keys = let
+      inherit (import ../../keys.nix) thegeneralist;
+    in [ thegeneralist ];
+  };
+
+  home-manager = {
+    backupFileExtension = "home.bak";
+    users.central.home = {
+      stateVersion = "25.11";
+      homeDirectory = "/Users/central";
+    };
+  };
+
+  system.stateVersion = 6;
+}

hosts/thegeneralist-central-mbp/default.nix

@@ -0,0 +1,30 @@
+lib: inputs: self: lib.darwinSystem {
+  specialArgs = inputs // { inherit inputs; inherit self; };
+  modules = [
+    # Extensions: nixosModules, darwinModules, overlays
+    ({ pkgs, lib, inputs, ... }: let
+      inherit (lib) attrValues hasAttrByPath getAttrFromPath filter;
+
+      collect = packagePath: (attrValues inputs)
+        |> filter (hasAttrByPath packagePath)
+        |> map (getAttrFromPath packagePath);
+
+      modules = collect [ "darwinModules" "default" ];
+      extensions = {
+        nixpkgs.overlays = collect [ "overlays" "default" ];
+        imports = modules;
+      };
+    in extensions)
+
+    ./configuration.nix
+
+    # Modules
+    ({ pkgs, ... }: let
+      inherit (lib) filter hasSuffix;
+      commonModules = lib.filesystem.listFilesRecursive ../../modules/common |> filter (hasSuffix ".nix");
+      darwinModules = lib.filesystem.listFilesRecursive ../../modules/darwin |> filter (hasSuffix ".nix");
+    in {
+      imports = commonModules ++ darwinModules;
+    })
+  ];
+}

hosts/thegeneralist-central-mbp/hardware-configuration.nix

@@ -0,0 +1,11 @@
+{ lib, ... }:
+
+{
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  # networking.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-darwin";
+}