python3Packages.jax: init at 0.2.19

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

@@ -0,0 +1,39 @@
+{ buildPythonPackage, fetchFromGitHub, lib
+# propagatedBuildInputs
+, absl-py, numpy, opt-einsum
+# checkInputs
+, jaxlib, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "jax";
+  version = "0.2.19";
+
+  # Fetching from pypi doesn't allow us to run the test suite. See https://discourse.nixos.org/t/pythonremovetestsdir-hook-being-run-before-checkphase/14612/3.
+  src = fetchFromGitHub {
+    owner = "google";
+    repo = pname;
+    rev = "jax-v${version}";
+    sha256 = "sha256-pVn62G7pydR7ybkf7gSbu0FlEq2c0US6H2GTBAljup4=";
+  };
+
+  # jaxlib is _not_ included in propagatedBuildInputs because there are
+  # different versions of jaxlib depending on the desired target hardware. The
+  # JAX project ships separate wheels for CPU, GPU, and TPU. Currently only the
+  # CPU wheel is packaged.
+  propagatedBuildInputs = [ absl-py numpy opt-einsum ];
+
+  checkInputs = [ jaxlib pytestCheckHook ];
+  # NOTE: Don't run the tests in the expiremental directory as they require flax
+  # which creates a circular dependency. See https://discourse.nixos.org/t/how-to-nix-ify-python-packages-with-circular-dependencies/14648/2.
+  # Not a big deal, this is how the JAX docs suggest running the test suite
+  # anyhow.
+  pytestFlagsArray = [ "-W ignore::DeprecationWarning" "tests/" ];
+
+  meta = with lib; {
+    description = "Differentiate, compile, and transform Numpy code.";
+    homepage    = "https://github.com/google/jax";
+    license     = licenses.asl20;
+    maintainers = with maintainers; [ samuela ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -3716,6 +3716,8 @@ in {
 
   javaproperties = callPackage ../development/python-modules/javaproperties { };
 
+  jax = callPackage ../development/python-modules/jax { };
+
   jaxlib = callPackage ../development/python-modules/jaxlib { };
 
   JayDeBeApi = callPackage ../development/python-modules/JayDeBeApi { };