auth: remove possibility to use kanidm 1.4.6

flake.nix

@@ -3,7 +3,6 @@
 
   inputs = {
     nixpkgs.url = github:nixos/nixpkgs;
-    nixpkgs-2411.url = github:nixos/nixpkgs/f6687779bf4c396250831aa5a32cbfeb85bb07a3;
     nixos-unstable.url = github:nixos/nixpkgs/nixos-unstable;
 
     selfprivacy-api.url =
@@ -12,7 +11,7 @@
     selfprivacy-api.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, nixpkgs-2411, nixos-unstable, selfprivacy-api }: {
+  outputs = { self, nixpkgs, nixos-unstable, selfprivacy-api }: {
     nixosConfigurations-fun =
       { hardware-configuration
       , deployment
@@ -27,33 +26,21 @@
             deployment
             ./configuration.nix
             ./auth/auth.nix
-            ({ config, ... }: {
+            {
               nixpkgs.overlays = [
                 (
                   _final: prev:
-                    let
-                      pkgs2411 =
-                        nixpkgs-2411.legacyPackages.${prev.system};
-                      pkgs-unstable =
-                        nixos-unstable.legacyPackages.${prev.system};
-                    in
-                    if config.selfprivacy.sso.useKanidm_1_4 or false
-                    then
-                      {
-                        inherit (pkgs2411) kanidm;
-                        kanidm-provision =
-                          pkgs2411.callPackage ./auth/kanidm-provision.nix { };
-                      }
-                    else
-                      {
-                        inherit (pkgs-unstable) kanidm kanidm-provision;
-                      }
+                    {
+                      inherit (nixos-unstable.legacyPackages.${prev.system})
+                        kanidm
+                        kanidm-provision
+                        ;
+                    }
                 )
               ];
-
               disabledModules = [ "services/security/kanidm.nix" ];
               imports = [ ./auth/kanidm.nix ];
-            })
+            }
             selfprivacy-api.nixosModules.default
             ({ pkgs, lib, ... }: {
               environment.etc = (lib.attrsets.mapAttrs'