Use conventional Nix formatting

Also always end comments with a full stop, and bump package versions.

nixos-module.nix

@@ -1,21 +1,21 @@
-{ pkgs , ... } :
+{ pkgs, ... }:
 
-with pkgs ;
+with pkgs;
 
 {
 	nixpkgs = {
 		overlays = [
-			( self : super : {
+			( self: super: {
 
 				journalctl-last-invocation = callPackage (
 					import packages/journalctl-last-invocation/package.nix
-				) {} ;
+				) {};
 
 				nix-store-fuzzy-find = callPackage (
 					import packages/nix-store-fuzzy-find/package.nix
-				) {} ;
+				) {};
 
-			} )
-		] ;
-	} ;
+			})
+		];
+	};
 }