Revert "remove meta attribute on extension"

This reverts commit 5b41878.

Author: drupol

pkgs/package-overrides.nix

@@ -21,6 +21,7 @@ let
 
   inherit (import ./lib.nix { inherit lib; }) removeLines;
 in
+
 {
   buildPecl =
     {
@@ -41,7 +42,7 @@ in
     composer = final.callPackage ./composer/2.2.nix { };
   };
 
-  extensions = lib.attrsets.mapAttrs (name: ext: builtins.removeAttrs ext [ "meta" ]) (prev.extensions // {
+  extensions = prev.extensions // {
     apcu =
       if lib.versionOlder prev.php.version "7.0" then
         prev.extensions.apcu.overrideAttrs (attrs: {
@@ -595,5 +596,5 @@ in
             "--with-zlib-dir=${pkgs.zlib.dev}"
           ];
     });
-  });
+  };
 }