diff --git a/pkgs/applications/science/math/caffe/default.nix b/pkgs/applications/science/math/caffe/default.nix
index 2a736d3d398e..153ebaa441f5 100644
--- a/pkgs/applications/science/math/caffe/default.nix
+++ b/pkgs/applications/science/math/caffe/default.nix
@@ -73,9 +73,17 @@ stdenv.mkDerivation rec {
                 ++ lib.optionals stdenv.isDarwin [ Accelerate CoreGraphics CoreVideo ]
                 ;
 
-  propagatedBuildInputs = lib.optional pythonSupport python.pkgs.protobuf;
+  propagatedBuildInputs = lib.optionals pythonSupport (
+    # requirements.txt
+    let pp = python.pkgs; in ([
+      pp.numpy pp.scipy pp.scikitimage pp.h5py
+      pp.matplotlib pp.ipython pp.networkx pp.nose
+      pp.pandas pp.dateutil pp.protobuf pp.gflags
+      pp.pyyaml pp.pillow pp.six
+    ] ++ lib.optional leveldbSupport pp.leveldb)
+  );
 
-  outputs = [ "bin" "out"];
+  outputs = [ "bin" "out" ];
   propagatedBuildOutputs = []; # otherwise propagates out -> bin cycle
 
   patches = [