♻️ config refactor cleanup

hosts/aristotle/configuration.nix

@@ -11,8 +11,6 @@
     ../../modules/sops
   ];
 
-  nixpkgs.overlays = [ (import ../../overlays) ];
-
   # Use the extlinux boot loader. (NixOS wants to enable GRUB by default)
   boot.loader.grub.enable = false;
   # Enables the generation of /boot/extlinux/extlinux.conf

hosts/plato/configuration.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }: {
+{ pkgs, ... }: {
   imports = [
     # Include the results of the hardware scan.
     ./hardware-configuration.nix
@@ -23,9 +23,6 @@
   boot.tmp.cleanOnBoot = true;
   boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
 
-  nixpkgs.config.allowUnfree = true;
-  nixpkgs.overlays = [ (import ../../overlays) ];
-
   nix.extraOptions = ''
     experimental-features = nix-command flakes
   '';

hosts/socrates/configuration.nix

@@ -18,8 +18,6 @@
     ../../modules/sops
   ];
 
-  nixpkgs.overlays = [ (import ../../overlays) ];
-
   boot.tmp.cleanOnBoot = true;
 
   # Set your time zone.