treewide: use configured zfs package

modules/nixos/podman.nix

@@ -1,5 +1,4 @@
 {
-  pkgs,
   lib,
   config,
   ...
@@ -9,6 +8,7 @@ with lib;
 
 let
   cfg = config.modules.podman;
+  zfsPkg = config.boot.zfs.package;
 in
 {
   options.modules.podman = {
@@ -29,7 +29,7 @@ in
           dates = "weekly";
           flags = [ "--all" ];
         };
-        extraPackages = [ pkgs.zfs ];
+        extraPackages = [ zfsPkg ];
       };
 
       containers.storage.settings.storage = {