Updated flake

flake.nix

@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    nixpkgs-old.url = "github:nixos/nixpkgs/0182a361324364ae3f436a63005877674cf45efb";
     home-manager = {
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -22,6 +23,7 @@
     {
       self,
       nixpkgs,
+      nixpkgs-old,
       home-manager,
       plasma-manager,
       nixvim,
@@ -50,17 +52,25 @@
           };
         }
       ];
+      specialArgs = {
+        pkgs-old = import nixpkgs-old {
+          inherit system;
+          config.allowUnfree = false;
+        };
+      };
     in
     {
       nixosConfigurations = {
         nixos = lib.nixosSystem {
           inherit system;
+	  inherit specialArgs;
           modules = baseModules ++ [
             ./devices/default/default.nix
           ];
         };
         live = lib.nixosSystem {
           inherit system;
+	  inherit specialArgs;
           modules = baseModules ++ [
             (nixpkgs + "/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix")
             {