diff --color -Nur cssutils-2.4.0.orig/cssutils.egg-info/requires.txt cssutils-2.4.0/cssutils.egg-info/requires.txt
--- cssutils-2.4.0.orig/cssutils.egg-info/requires.txt	2022-02-22 17:19:04.000000000 -0800
+++ cssutils-2.4.0/cssutils.egg-info/requires.txt	2022-05-28 13:58:35.691494189 -0700
@@ -9,17 +9,17 @@
 
 [testing]
 pytest>=6
-pytest-checkdocs>=2.4
-pytest-flake8
+#pytest-checkdocs>=2.4
+#pytest-flake8
 pytest-cov
 pytest-enabler>=1.0.1
 mock
 lxml
 cssselect
 
-[testing:platform_python_implementation != "PyPy"]
-pytest-black>=0.3.7
-pytest-mypy>=0.9.1
+#[testing:platform_python_implementation != "PyPy"]
+#pytest-black>=0.3.7
+#pytest-mypy>=0.9.1
 
 [testing:python_version < "3.9"]
 importlib_resources
diff --color -Nur cssutils-2.4.0.orig/examples/website.py cssutils-2.4.0/examples/website.py
--- cssutils-2.4.0.orig/examples/website.py	2022-02-22 17:18:44.000000000 -0800
+++ cssutils-2.4.0/examples/website.py	2022-05-28 15:41:38.568224880 -0700
@@ -58,8 +58,8 @@
     >>> sheet = cssutils.parseString('a { x: 1; } @import "http://cthedot.de/not-present.css";')
     >>> print(mylog.getvalue())
     WARNING Property: Unknown Property name. [1:5: x]
-    WARNING HTTPError opening url=http://cthedot.de/not-present.css: 404 Not Found
-    WARNING CSSImportRule: While processing imported style sheet href=http://cthedot.de/not-present.css: OSError('Cannot read Stylesheet.'...)
+    WARNING URLError, [Errno -3] Temporary failure in name resolution
+    WARNING CSSImportRule: While processing imported style sheet href=http://cthedot.de/not-present.css: OSError('Cannot read Stylesheet.')
     ERROR CSSStylesheet: CSSImportRule not allowed here. [1:13: @import]
     <BLANKLINE>
     """
diff --color -Nur cssutils-2.4.0.orig/pyproject.toml cssutils-2.4.0/pyproject.toml
--- cssutils-2.4.0.orig/pyproject.toml	2022-02-22 17:18:44.000000000 -0800
+++ cssutils-2.4.0/pyproject.toml	2022-05-28 13:51:22.943097633 -0700
@@ -7,14 +7,14 @@
 
 [tool.setuptools_scm]
 
-[pytest.enabler.black]
-addopts = "--black"
+#[pytest.enabler.black]
+#addopts = "--black"
 
-[pytest.enabler.mypy]
+#[pytest.enabler.mypy]
 # addopts = "--mypy"
 
-[pytest.enabler.flake8]
-addopts = "--flake8"
+#[pytest.enabler.flake8]
+#addopts = "--flake8"
 
 [pytest.enabler.cov]
 addopts = "--cov"
diff --color -Nur cssutils-2.4.0.orig/setup.cfg cssutils-2.4.0/setup.cfg
--- cssutils-2.4.0.orig/setup.cfg	2022-02-22 17:19:04.508949000 -0800
+++ cssutils-2.4.0/setup.cfg	2022-05-28 13:58:44.504461532 -0700
@@ -38,14 +38,14 @@
 [options.extras_require]
 testing = 
 	pytest >= 6
-	pytest-checkdocs >= 2.4
-	pytest-flake8
-	pytest-black >= 0.3.7; \
-	python_implementation != "PyPy"
+#	pytest-checkdocs >= 2.4
+#	pytest-flake8
+#	pytest-black >= 0.3.7; \
+#	python_implementation != "PyPy"
 	pytest-cov
-	pytest-mypy >= 0.9.1; \
-	python_implementation != "PyPy"
-	pytest-enabler >= 1.0.1
+#	pytest-mypy >= 0.9.1; \
+#	python_implementation != "PyPy"
+#	pytest-enabler >= 1.0.1
 	
 	mock
 	lxml