python.pkgs.tensorflow-probability: init at 0.6.0

Needed as a dependency for dm-sonnet.

pkgs/development/python-modules/tensorflow-probability/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, fetchFromGitHub
+, buildPythonPackage
+, tensorflow
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "tensorflow-probability";
+  version = "0.6.0";
+
+  src = fetchFromGitHub {
+    owner = "tensorflow";
+    repo = "probability";
+    rev = "v${version}";
+    sha256 = "1y210n4asv8j39pk68bdfrz01gddflvzhxbcvj5jw6rjgaagnhvx";
+  };
+
+  propagatedBuildInputs = [
+    tensorflow
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  # Tests have an invalid import (`tensorflow_probability.opensource`), should
+  # be resolved in the next version with
+  # https://github.com/tensorflow/probability/commit/77d5957f2f0bdddcb46582799cd9c5c5167a1a40
+  doCheck = false;
+  checkPhase = ''
+    py.test
+  '';
+
+  meta = with lib; {
+    description = "Library for probabilistic reasoning and statistical analysis";
+    homepage = https://www.tensorflow.org/probability/;
+    license = licenses.asl20;
+    maintainers = with maintainers; [ timokau ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -5143,6 +5143,8 @@ in {
 
   tensorflow-estimator = callPackage ../development/python-modules/tensorflow-estimator { };
 
+  tensorflow-probability = callPackage ../development/python-modules/tensorflow-probability { };
+
   tensorflow-tensorboard = callPackage ../development/python-modules/tensorflow-tensorboard { };
 
   tensorflow =