cleaned up core modules and added universal flakeLocation argument

modules/system/core/default.nix

@@ -1,13 +1,5 @@
-{
-  self,
-  inputs,
-  ...
-}: {
-  flake.nixosModules.core = {
-    pkgs,
-    lib,
-    ...
-  }: let
+{self, ...}: {
+  flake.nixosModules.core = {pkgs, ...}: let
     modules = with self.nixosModules; [
       user
       bootloader
@@ -21,6 +13,7 @@
         /etc/nixos/hardware-configuration.nix
       ]
       ++ modules;
+
     services = {
       openssh.enable = true;
       avahi.enable = true;

modules/system/core/nix-settings.nix

@@ -1,8 +1,12 @@
 {inputs, ...}: {
   perSystem = {system, ...}: {
-    _module.args.unfreePkgs = import inputs.nixpkgs {
-      inherit system;
-      config.allowUnfree = true;
+    _module.args = {
+      unfreePkgs = import inputs.nixpkgs {
+        inherit system;
+        config.allowUnfree = true;
+      };
+      # Make flakeLocation universally addressable
+      flakeLocation = builtins.getEnv "PWD";
     };
   };
   flake.nixosModules.nix = {...}: {