diff --git a/pkgs/development/python-modules/dlib/default.nix b/pkgs/development/python-modules/dlib/default.nix
index d9b3bb93264e..a57d83075513 100644
--- a/pkgs/development/python-modules/dlib/default.nix
+++ b/pkgs/development/python-modules/dlib/default.nix
@@ -21,4 +21,7 @@ buildPythonPackage {
   '';
 
   checkInputs = [ pytest more-itertools ];
+
+  enableParallelBuilding = true;
+  dontUseCmakeConfigure = true;
 }
diff --git a/pkgs/development/python-modules/face_recognition_models/default.nix b/pkgs/development/python-modules/face_recognition_models/default.nix
index 960bffb903d6..12587e6792df 100644
--- a/pkgs/development/python-modules/face_recognition_models/default.nix
+++ b/pkgs/development/python-modules/face_recognition_models/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, stdenv, fetchPypi }:
+{ buildPythonPackage, stdenv, fetchPypi, setuptools }:
 
 buildPythonPackage rec {
   pname = "face_recognition_models";
@@ -12,6 +12,8 @@ buildPythonPackage rec {
   # no module named `tests` as no tests are available
   doCheck = false;
 
+  propagatedBuildInputs = [ setuptools ];
+
   meta = with stdenv.lib; {
     homepage = https://github.com/ageitgey/face_recognition_models;
     license = licenses.cc0;