diff --git a/default.nix b/default.nix
index e6958df..449af63 100644
--- a/default.nix
+++ b/default.nix
@@ -42,8 +42,8 @@ rec {
   # radical-native = pkgs.callPackage ./pkgs/radical-native { };
 ##  photini = pkgs.libsForQt5.callPackage ./pkgs/photini { };
 
-#  pylzma = pkgs.callPackage ./pkgs/python-modules/pylzma { buildPythonPackage = pkgs.python3Packages.buildPythonPackage; fetchPypi = pkgs.python3Packages.fetchPypi; };
-#  hydrus = pkgs.libsForQt5.callPackage ./pkgs/hydrus { inherit pylzma;};
+  pylzma = pkgs.callPackage ./pkgs/python-modules/pylzma { buildPythonPackage = pkgs.python3Packages.buildPythonPackage; fetchPypi = pkgs.python3Packages.fetchPypi; };
+  hydrus = pkgs.libsForQt5.callPackage ./pkgs/hydrus { inherit pylzma;};
 
 ##  metapixel = pkgs.callPackage ./pkgs/metapixel { };