From 638251852eeed0bfaa7193269b2b079f821e7c07 Mon Sep 17 00:00:00 2001
From: Kevin Amado <kamadorueda@gmail.com>
Date: Sun, 9 Feb 2020 09:49:08 -0500
Subject: [PATCH] pythonPackages.promise: init at 2.3

---
 .../python-modules/promise/default.nix        | 49 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 2 files changed, 51 insertions(+)
 create mode 100644 pkgs/development/python-modules/promise/default.nix

diff --git a/pkgs/development/python-modules/promise/default.nix b/pkgs/development/python-modules/promise/default.nix
new file mode 100644
index 000000000000..68668812fc8a
--- /dev/null
+++ b/pkgs/development/python-modules/promise/default.nix
@@ -0,0 +1,49 @@
+{ buildPythonPackage
+, fetchPypi
+, lib
+
+, coveralls
+, gevent
+, mock
+, pytest-asyncio
+, pytest-benchmark
+, pytestcov
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "promise";
+  version = "2.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1l4kknj97dj5pxfpsz3ln78x9a843561c740b1m4pfi3qlvq7lfz";
+  };
+
+  patchPhase = ''
+    substituteInPlace setup.py \
+      --replace '"futures",' ""
+  '';
+
+  propagatedBuildInputs = [
+    gevent
+    six
+  ];
+
+  checkInputs = [
+    coveralls
+    mock
+    pytest-asyncio
+    pytest-benchmark
+    pytestcov
+  ];
+
+  meta = with lib; {
+    description = "Ultra-performant Promise implementation in Python";
+    homepage = "https://github.com/syrusakbary/promise";
+    license = licenses.mit;
+    maintainers = with maintainers; [
+      kamadorueda
+    ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 49bda83cddcf..3b5e60ae9607 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4793,6 +4793,8 @@ in {
 
   precis-i18n = callPackage ../development/python-modules/precis-i18n { };
 
+  promise = callPackage ../development/python-modules/promise { };
+
   prox-tv = callPackage ../development/python-modules/prox-tv {
     # We need to use blas instead of openblas on darwin,
     # see https://github.com/NixOS/nixpkgs/pull/45013.