clean up host settings

and start removing if statements

modules/common/shell/nixpkgs.nix

@@ -67,6 +67,12 @@
     # Set channel to flake packages, used for nix-shell commands
     nixPath = [ "nixpkgs=${pkgs.path}" ];
 
+    # Set registry to this flake's packages, used for nix X commands
+    registry.nixpkgs.to = {
+      type = "path";
+      path = pkgs.path;
+    };
+
   };
 
 }