fix: Formatting

Working:
  - The daemon
  - Mutable config — well, kinda. I'm not yet sure how it will interact with
    `emacsWithPackagesFromUsePackage`.
  - Packages via Nixpkgs

outputs/homeConfigurations.nix

@@ -13,6 +13,7 @@ let users = builtins.readDir ../users;
         # Directory name should always match username.
         ({ ... }: { home.username = username; })
 
+        # TODO: Move to default module.
         ({ lib, ... }: {
           nix = {
             settings.experimental-features =

outputs/nixosConfigurations.nix

@@ -18,10 +18,11 @@ let
           (builtins.readDir ../users)));
   };
 
-  mkHost = hostName: nixpkgs.lib.nixosSystem {
+  mkHost = hostName:
+    let system = import ../hosts/${hostName}/system.nix;
+    in nixpkgs.lib.nixosSystem {
       specialArgs = inputs;
-    system = import ../hosts/${hostName}/system.nix;
+      inherit system;
-    # TODO: This is very ad-hoc, and I don't like it.  Organise this better.
       modules = [
         ../hosts/${hostName}/configuration.nix
 
@@ -51,6 +52,7 @@ let
               inherit config lib;
               pkgs = nixpkgs;
             };
+            inherit inputs system;
           };
         })
       ];