1 files changed, 42 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/jmp/default.nix b/nixpkgs/pkgs/development/python-modules/jmp/default.nix
new file mode 100644
index 000000000000..dc096b93ae46
--- /dev/null
+++ b/nixpkgs/pkgs/development/python-modules/jmp/default.nix
@@ -0,0 +1,42 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, jax
+, jaxlib
+, lib
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "jmp";
+  # As of 2022-01-01, the latest stable version (0.0.2) fails tests with recent JAX versions,
+  # IIUC it's fixed in https://github.com/deepmind/jmp/commit/4969392f618d7733b265677143d8c81e44085867
+  version = "unstable-2021-10-03";
+
+  src = fetchFromGitHub {
+    owner = "deepmind";
+    repo = pname;
+    rev = "4b94370b8de29b79d6f840b09d1990b91c1afddd";
+    sha256 = "0hh4cmp93wjyidj48gh07vhx2kjvpwd23xvy79bsjn5qaaf6q4cm";
+  };
+
+  # Wheel requires only `numpy`, but the import needs both `jax` and `jaxlib`.
+  propagatedBuildInputs = [
+    jax
+    jaxlib
+  ];
+
+  pythonImportsCheck = [
+    "jmp"
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    description = "This library implements support for mixed precision training in JAX.";
+    homepage = "https://github.com/deepmind/jmp";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ndl ];
+  };
+}