fix(keys): unique is not in extra anymore

lib/keys/default.nix

@@ -7,7 +7,7 @@
 { meta, lib }:
 
 let
-  inherit (lib.extra) setDefault unique;
+  inherit (lib.extra) setDefault;
 
   getAttr = lib.flip builtins.getAttr;
 in
@@ -33,14 +33,14 @@ rec {
   getNodeAdmins = node: meta.organization.groups.root ++ meta.nodes.${node}.admins;
 
   # All keys needed for secret encryption
-  getSecretKeys = node: unique (getMemberKeys (getNodeAdmins node) ++ getNodeKeys [ node ]);
+  getSecretKeys = node: lib.unique (getMemberKeys (getNodeAdmins node) ++ getNodeKeys [ node ]);
 
   # List of keys for all machines wide secrets
   machineKeys = rootKeys ++ (getNodeKeys (builtins.attrNames meta.nodes));
 
-  mkSecrets = nodes: setDefault { publicKeys = unique (builtins.concatMap getSecretKeys nodes); };
+  mkSecrets = nodes: setDefault { publicKeys = lib.unique (builtins.concatMap getSecretKeys nodes); };
 
-  mkRootSecrets = setDefault { publicKeys = unique rootKeys; };
+  mkRootSecrets = setDefault { publicKeys = lib.unique rootKeys; };
 
   machineKeysBySystem =
     system: