From e33be2ab56c4398e335cd910ce43a7ae377be547 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@github.danieldk.eu>
Date: Mon, 3 Sep 2018 21:59:36 +0200
Subject: [PATCH] Keras: fix build by updating expected dependencies. (#45992)

Keras expects keras_preprocessing 1.0.2 and 1.0.4. 1.0.3 and 1.0.5
are respectively in nixpkgs.

ZHF #45960
---
 pkgs/development/python-modules/keras/default.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/development/python-modules/keras/default.nix b/pkgs/development/python-modules/keras/default.nix
index ea699c9c04a97..43f3bd935d249 100644
--- a/pkgs/development/python-modules/keras/default.nix
+++ b/pkgs/development/python-modules/keras/default.nix
@@ -25,6 +25,14 @@ buildPythonPackage rec {
     keras-applications keras-preprocessing
   ];
 
+  # Keras 2.2.2 expects older versions of keras_applications
+  # and keras_preprocessing. These substitutions can be removed
+  # for for the next Keras release.
+  postPatch = ''
+    substituteInPlace setup.py --replace "keras_applications==1.0.4" "keras_applications==1.0.5"
+    substituteInPlace setup.py --replace "keras_preprocessing==1.0.2" "keras_preprocessing==1.0.3"
+  '';
+
   # Couldn't get tests working
   doCheck = false;