diff --git a/pkgs/system/all-packages-generic.nix b/pkgs/system/all-packages-generic.nix
index bbd70fe1e3c..f97c209f32b 100644
--- a/pkgs/system/all-packages-generic.nix
+++ b/pkgs/system/all-packages-generic.nix
@@ -757,7 +757,7 @@ rec {
   };
 
   nix = (import ../misc/nix) {
-    inherit fetchurl stdenv aterm;
+    inherit fetchurl stdenv aterm perl;
     bdb = db4;
   };
 
diff --git a/pkgs/system/populate-cache.nix b/pkgs/system/populate-cache.nix
index a716f6be4ee..8bc57051b81 100644
--- a/pkgs/system/populate-cache.nix
+++ b/pkgs/system/populate-cache.nix
@@ -17,7 +17,7 @@ let {
       pkgs.wget
       pkgs.par2cmdline
       pkgs.cksfv
-      pkgs.bittorrent
+#      pkgs.bittorrent
       pkgs.graphviz
       pkgs.bash
       pkgs.binutils
@@ -41,12 +41,12 @@ let {
       pkgs.subversion
       pkgs.pan
       pkgs.sylpheed
-      pkgs.firefox
+#      pkgs.firefox
       pkgs.MPlayer
       pkgs.MPlayerPlugin
-      pkgs.vlc
+#      pkgs.vlc
       pkgs.zapping
-      pkgs.gqview
+#      pkgs.gqview
       pkgs.hello
       pkgs.nxml
       pkgs.uml