Correct build for fuzzing

pyproject.toml

@@ -2,7 +2,7 @@
 # We use the pyproject.toml package specification.
 # See https://packaging.python.org/en/latest/guides/section-build-and-publish/
 # See https://github.com/collective/icalendar/issues/686
-# See https://packaging.python.org/en/latest/specifications/pyproject-toml/#license
+# See https://packaging.python.org/en/latest/specifications/pyproject-toml/
 #
 
 [build-system]
@@ -86,6 +86,17 @@ test = [
 [project.scripts]
 icalendar = "icalendar.cli:main"
 
+[tool.hatch.build]
+exclude = [
+  "/.*",
+  "/*.*",
+  "/src/icalendar/fuzzing",
+  "/docs",
+  "/dist",
+  "/build",
+  "/htmlcov",
+]
+
 [tool.hatch.metadata.hooks.vcs.urls]
 # This is a dynamic generation of [project.urls]
 Homepage = "https://icalendar.readthedocs.io/"

src/icalendar/tests/test_create_release.sh

@@ -7,7 +7,9 @@ set -e
 cd "`dirname \"$0\"`"
 cd "../../.."
 
-python3 setup.py sdist
+rm -rf dist
+pip3 install build
+python3 -m build
 archive=`echo dist/icalendar-*.tar.gz`
 
 if ! [ -f "$archive" ]; then