From 4411b29065635a2058d713b70b43076eedaab24f Mon Sep 17 00:00:00 2001
From: Tom Hunger <tehunger@gmail.com>
Date: Wed, 26 Dec 2018 18:26:26 +0000
Subject: [PATCH] opt-einsum: init at 2.3.2

---
 .../python-modules/opt-einsum/default.nix     | 31 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 ++
 2 files changed, 33 insertions(+)
 create mode 100644 pkgs/development/python-modules/opt-einsum/default.nix

diff --git a/pkgs/development/python-modules/opt-einsum/default.nix b/pkgs/development/python-modules/opt-einsum/default.nix
new file mode 100644
index 000000000000..c28105d4e492
--- /dev/null
+++ b/pkgs/development/python-modules/opt-einsum/default.nix
@@ -0,0 +1,31 @@
+{ buildPythonPackage, fetchPypi, lib, numpy, pytest, pytestpep8, pytestcov }:
+buildPythonPackage rec {
+  version = "2.3.2";
+  pname = "opt_einsum";
+
+  src = fetchPypi {
+    inherit version pname;
+    sha256 = "0ny3v8x83mzpwmqjdzqhzy2pzwyy4wx01r1h9i29xw3yvas69m6k";
+  };
+
+  checkInputs = [
+    pytest
+    pytestpep8
+    pytestcov
+  ];
+
+  checkPhase = ''
+    pytest
+  '';
+
+  propagatedBuildInputs = [
+    numpy
+  ];
+
+  meta = {
+    description = "Optimizing NumPy's einsum function with order optimization and GPU support.";
+    homepage = http://optimized-einsum.readthedocs.io;
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ teh ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a377046c990b..ca094e657d5b 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2416,6 +2416,8 @@ in {
     cudaSupport = pkgs.config.cudaSupport or false;
   };
 
+  opt-einsum = callPackage ../development/python-modules/opt-einsum {};
+
   pytorchWithCuda = self.pytorch.override {
     cudaSupport = true;
   };