bind: move defaults to package file

pkgs/servers/dns/bind/default.nix

@@ -1,7 +1,7 @@
-{ stdenv, lib, fetchurl
+{ config, stdenv, lib, fetchurl
 , perl
 , libcap, libtool, libxml2, openssl
-, enablePython ? false, python3 ? null
+, enablePython ? config.bind.enablePython or false, python3 ? null
 , enableSeccomp ? false, libseccomp ? null, buildPackages
 }:
 
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libtool libxml2 openssl ]
     ++ lib.optional stdenv.isLinux libcap
     ++ lib.optional enableSeccomp libseccomp
-    ++ lib.optional enablePython python3;
+    ++ lib.optional enablePython (python3.withPackages (ps: with ps; [ ply ]));
 
   STD_CDEFINES = [ "-DDIG_SIGCHASE=1" ]; # support +sigchase
 

pkgs/top-level/all-packages.nix

@@ -13446,10 +13446,7 @@ in
 
   bftpd = callPackage ../servers/ftp/bftpd {};
 
-  bind = callPackage ../servers/dns/bind {
-    enablePython = config.bind.enablePython or false;
-    python3 = python3.withPackages (ps: with ps; [ ply ]);
-  };
+  bind = callPackage ../servers/dns/bind { };
   dnsutils = bind.dnsutils;
 
   inherit (callPackages ../servers/bird { })