Python: move expressions in python-modules to their own folders

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

@@ -0,0 +1,44 @@
+{ stdenv, buildPythonPackage, fetchFromGitHub, python
+, pythonOlder, pythonAtLeast, enum34
+, doCheck ? true, pytest, pytest_xdist, flake8, flaky
+}:
+buildPythonPackage rec {
+  # http://hypothesis.readthedocs.org/en/latest/packaging.html
+
+  # Hypothesis has optional dependencies on the following libraries
+  # pytz fake_factory django numpy pytest
+  # If you need these, you can just add them to your environment.
+
+  version = "3.11.1";
+  pname = "hypothesis";
+  name = "${pname}-${version}";
+
+  # Upstream prefers github tarballs
+  src = fetchFromGitHub {
+    owner = "HypothesisWorks";
+    repo = "hypothesis-python";
+    rev = "${version}";
+    sha256 = "0damf6zbm0db2a3gfwrbbj92yal576wpmhhchc0w0np8vdnax70n";
+  };
+
+  checkInputs = stdenv.lib.optionals doCheck [ pytest pytest_xdist flake8 flaky ];
+  propagatedBuildInputs = stdenv.lib.optionals (pythonOlder "3.4") [ enum34 ];
+
+  inherit doCheck;
+
+  # https://github.com/DRMacIver/hypothesis/issues/300
+  checkPhase = ''
+    rm tox.ini # This file changes how py.test runs and breaks it
+    py.test tests/cover
+  '';
+
+  # Unsupport by upstream on certain versions
+  # https://github.com/HypothesisWorks/hypothesis-python/issues/477
+  disabled = pythonOlder "3.4" && pythonAtLeast "2.8";
+
+  meta = with stdenv.lib; {
+    description = "A Python library for property based testing";
+    homepage = https://github.com/DRMacIver/hypothesis;
+    license = licenses.mpl20;
+  };
+}