From f0bdb5bd89e8f7482f2779b60bdc46e719dde76c Mon Sep 17 00:00:00 2001
From: Julian Stecklina <julian.stecklina@cyberus-technology.de>
Date: Fri, 9 Jul 2021 14:41:03 +0200
Subject: [PATCH] watson: fix build problem with click 8

pythonPackages brings click 8. Unfortunately, watson is not ready to
consume this library yet. Fix by explicitly pulling in click 7 as
dependency. See these upstream discussions:

https://github.com/TailorDev/Watson/issues/430
https://github.com/TailorDev/Watson/pull/432
---
 pkgs/applications/office/watson/default.nix | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/pkgs/applications/office/watson/default.nix b/pkgs/applications/office/watson/default.nix
index b212ae05a9d2..74e06d4311ce 100644
--- a/pkgs/applications/office/watson/default.nix
+++ b/pkgs/applications/office/watson/default.nix
@@ -2,8 +2,23 @@
 
 with pythonPackages;
 
-buildPythonApplication rec {
+let
+  # Watson is currently not compatible with Click 8. See the following
+  # upstream issues / MRs:
+  #
+  # https://github.com/TailorDev/Watson/issues/430
+  # https://github.com/TailorDev/Watson/pull/432
+  #
+  # Workaround the issue by providing click 7 explicitly.
+  click7 = pythonPackages.callPackage ../../../development/python-modules/click/7.nix {};
+  click7-didyoumean = click-didyoumean.override {
+    click = click7;
+  };
+in buildPythonApplication rec {
   pname = "watson";
+
+  # When you update Watson, please check whether the Click 7
+  # workaround above can go away.
   version = "2.0.1";
 
   src = fetchFromGitHub {
@@ -19,7 +34,7 @@ buildPythonApplication rec {
   '';
 
   checkInputs = [ pytestCheckHook pytest-mock mock pytest-datafiles ];
-  propagatedBuildInputs = [ arrow click click-didyoumean requests ];
+  propagatedBuildInputs = [ arrow click7 click7-didyoumean requests ];
   nativeBuildInputs = [ installShellFiles ];
 
   meta = with lib; {