pythonPackages.dftfit: cleanup, add import check

pkgs/development/python-modules/dftfit/default.nix

@@ -12,11 +12,7 @@
 , lammps-cython
 , pymatgen-lammps
 , pytestrunner
-, pytest
-, pytestcov
-, pytest-benchmark
 , isPy3k
-, openssh
 }:
 
 buildPythonPackage rec {
@@ -30,13 +26,22 @@ buildPythonPackage rec {
   };
 
   buildInputs = [ pytestrunner ];
-  checkInputs = [ pytest pytestcov pytest-benchmark openssh ];
+  propagatedBuildInputs = [
-  propagatedBuildInputs = [ pymatgen marshmallow pyyaml pygmo
+    pymatgen
-                            pandas scipy numpy scikitlearn
+    marshmallow
-                            lammps-cython pymatgen-lammps ];
+    pyyaml
+    pygmo
+    pandas
+    scipy
+    numpy
+    scikitlearn
+    lammps-cython
+    pymatgen-lammps
+  ];
 
   # tests require git lfs download. and is quite large so skip tests
   doCheck = false;
+  pythonImportsCheck = [ "dftfit" ];
 
   meta = {
     description = "Ab-Initio Molecular Dynamics Potential Development";