pythonPackages.jaraco_logging: fix build

The package currently fails because of some flake8 violations. However
invalid coding style shouldn't break the Nix package.

See also https://hydra.nixos.org/build/90301692
Addresses #56826

pkgs/development/python-modules/jaraco_logging/0001-Don-t-run-flake8-checks-during-the-build.patch

@@ -0,0 +1,38 @@
+From 4b9801d9bbe535fd6719933b96278915573e3595 Mon Sep 17 00:00:00 2001
+From: Maximilian Bosch <maximilian@mbosch.me>
+Date: Sun, 10 Mar 2019 16:42:21 +0100
+Subject: [PATCH] Don't run flake8 checks during the build
+
+If the code simply violates their code style, the Nix package shouldn't fail.
+---
+ pytest.ini | 2 +-
+ setup.cfg  | 1 -
+ 2 files changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/pytest.ini b/pytest.ini
+index 9b3c1ec..a5189c1 100644
+--- a/pytest.ini
++++ b/pytest.ini
+@@ -1,6 +1,6 @@
+ [pytest]
+ norecursedirs=dist build .tox .eggs
+-addopts=--doctest-modules --flake8
++addopts=--doctest-modules
+ doctest_optionflags=ALLOW_UNICODE ELLIPSIS
+ filterwarnings=
+ 	ignore:Possible nested set::pycodestyle:113
+diff --git a/setup.cfg b/setup.cfg
+index 3e7bbed..5cac7a2 100644
+--- a/setup.cfg
++++ b/setup.cfg
+@@ -29,7 +29,6 @@ setup_requires = setuptools_scm >= 1.15.0
+ testing = 
+ 	pytest >= 3.5, !=3.7.3
+ 	pytest-checkdocs
+-	pytest-flake8
+ docs = 
+ 	sphinx
+ 	jaraco.packaging >= 3.2
+-- 
+2.18.1
+

pkgs/development/python-modules/jaraco_logging/default.nix

@@ -1,5 +1,6 @@
 { lib, buildPythonPackage, fetchPypi, setuptools_scm
-, tempora, six, pytest, pytest-flake8 }:
+, tempora, six, pytest
+}:
 
 buildPythonPackage rec {
   pname = "jaraco.logging";
@@ -10,9 +11,11 @@ buildPythonPackage rec {
     sha256 = "1lb846j7qs1hgqwkyifv51nhl3f8jimbc4lk8yn9nkaynw0vyzcg";
   };
 
+  patches = [ ./0001-Don-t-run-flake8-checks-during-the-build.patch ];
+
   buildInputs = [ setuptools_scm ];
   propagatedBuildInputs = [ tempora six ];
-  checkInputs = [ pytest pytest-flake8 ];
+  checkInputs = [ pytest ];
 
   checkPhase = ''
     PYTHONPATH=".:$PYTHONPATH" pytest