diff --git a/pkgs/development/python-modules/pytest-cases/default.nix b/pkgs/development/python-modules/pytest-cases/default.nix
new file mode 100644
index 00000000000..2914b3cf9aa
--- /dev/null
+++ b/pkgs/development/python-modules/pytest-cases/default.nix
@@ -0,0 +1,51 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, makefun
+, decopatch
+, pythonOlder
+, pytest
+, setuptools-scm
+}:
+
+buildPythonPackage rec {
+  pname = "pytest-cases";
+  version = "3.4.6";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "17w4s6622i97q81g15zamqm536ib00grgdfk2f4kk9bw2k7sdlq6";
+  };
+
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  buildInputs = [
+    pytest
+  ];
+
+  propagatedBuildInputs = [
+    decopatch
+    makefun
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.cfg --replace "pytest-runner" ""
+  '';
+
+  # Tests have dependencies (pytest-harvest, pytest-steps) which
+  # are not available in Nixpkgs. Most of the packages (decopatch,
+  # makefun, pytest-*) have circular dependecies.
+  doCheck = false;
+
+  pythonImportsCheck = [ "pytest_cases" ];
+
+  meta = with lib; {
+    description = "Separate test code from test cases in pytest";
+    homepage = "https://github.com/smarie/python-pytest-cases";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index cd864d64a26..b1d6831b700 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6267,6 +6267,8 @@ in {
   pytest-cache = self.pytestcache; # added 2021-01-04
   pytestcache = callPackage ../development/python-modules/pytestcache { };
 
+  pytest-cases = callPackage ../development/python-modules/pytest-cases{ };
+
   pytest-catchlog = callPackage ../development/python-modules/pytest-catchlog { };
 
   pytest-celery = callPackage ../development/python-modules/pytest-celery { };