python3Packages.cassandra-driver: fix build & tests

pkgs/development/python-modules/cassandra-driver/default.nix

@@ -1,47 +1,85 @@
-{ lib, buildPythonPackage, fetchPypi, python, pythonOlder
+{ stdenv, lib, buildPythonPackage, fetchFromGitHub, python, pythonOlder
 , cython
 , eventlet
 , futures
+, iana-etc
+, geomet
 , libev
 , mock
 , nose
-, pytest
+, pytestCheckHook
 , pytz
 , pyyaml
 , scales
 , six
 , sure
+, gremlinpython
+, gevent
+, twisted
+, libredirect
 }:
 
 buildPythonPackage rec {
   pname = "cassandra-driver";
   version = "3.24.0";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "83ec8d9a5827ee44bb1c0601a63696a8a9086beaf0151c8255556299246081bd";
+  # pypi tarball doesn't include tests
+  src = fetchFromGitHub {
+    owner = "datastax";
+    repo = "python-driver";
+    rev = version;
+    sha256 = "1rr69hly5q810xpn8rkzxwzlq55wxxp7kwki9vfri3gh674d2wip";
   };
 
   nativeBuildInputs = [ cython ];
   buildInputs = [ libev ];
-  propagatedBuildInputs = [ six ]
+  propagatedBuildInputs = [ six geomet ]
     ++ lib.optionals (pythonOlder "3.4") [ futures ];
 
-  checkInputs = [ eventlet mock nose pytest pytz pyyaml sure ];
-
-  # ignore test files which try to do socket.getprotocolname('tcp')
-  # as it fails in sandbox mode due to lack of a /etc/protocols file
-  checkPhase = ''
-    pytest tests/unit \
-      --ignore=tests/unit/io/test_libevreactor.py \
-      --ignore=tests/unit/io/test_eventletreactor.py \
-      --ignore=tests/unit/io/test_asyncorereactor.py
+  # Make /etc/protocols accessible to allow socket.getprotobyname('tcp') in sandbox,
+  # also /etc/resolv.conf is referenced by some tests
+  preCheck = (stdenv.lib.optionalString stdenv.isLinux ''
+    echo "nameserver 127.0.0.1" > resolv.conf
+    export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf)
+    export LD_PRELOAD=${libredirect}/lib/libredirect.so
+  '') + ''
+    # increase tolerance for time-based test
+    substituteInPlace tests/unit/io/utils.py --replace 'delta=.15' 'delta=.3'
   '';
+  postCheck = ''
+    unset NIX_REDIRECTS LD_PRELOAD
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+    eventlet
+    mock
+    nose
+    pytz
+    pyyaml
+    sure
+    scales
+    gremlinpython
+    gevent
+    twisted
+  ];
+
+  pytestFlagsArray = [
+    "tests/unit"
+    # requires puresasl
+    "--ignore=tests/unit/advanced/test_auth.py"
+  ];
+  disabledTests = [
+    # doesn't seem to be intended to be run directly
+    "_PoolTests"
+    # attempts to make connection to localhost
+    "test_connection_initialization"
+  ];
 
   meta = with lib; {
     description = "A Python client driver for Apache Cassandra";
     homepage = "http://datastax.github.io/python-driver";
     license = licenses.asl20;
-    broken = true; # geomet doesn't exist
+    maintainers = with maintainers; [ turion ris ];
   };
 }