Clean up some unused code, perform formatting

nix/pkgs/darwin.nix

@@ -1,4 +1,4 @@
-{ pkgs, homebrew, ... }:
+{ pkgs, ... }:
 {
   home = {
     packages = with pkgs; [

nix/pkgs/linux.nix

@@ -1,7 +1,8 @@
-{ pkgs, ... }: {
-    home = {
-        file = {
-            ".config/sway".source = ../sway;
-        };
+{ pkgs, ... }:
+{
+  home = {
+    file = {
+      ".config/sway".source = ../sway;
     };
+  };
 }

nix/pkgs/wsl.nix

@@ -1,2 +1,3 @@
-{ ... }: {
+{ ... }:
+{
 }