diff --git a/configuration.nix b/configuration.nix
index b3b656aac276c450fa9215699bfcd874ac376a60..a3fb5e0e7e9b327efe09211b5c0c9152852cd61a 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -3,5 +3,22 @@
 with pkgs.haskell.lib;
 
 final: prev: {
+
+  ForestStructures = null;
+
+  BiobaseTypes = null;
+
+  BiobaseENA = null;
+
+  iterable = null;
+
+  hPDB = null;
+
+  PrimitiveArray = null;
+
+  biocore = null;
+
+  blastxml = null;
+
 }