Index: matplotlib-3.9.0/pyproject.toml
===================================================================
--- matplotlib-3.9.0.orig/pyproject.toml
+++ matplotlib-3.9.0/pyproject.toml
@@ -90,7 +90,7 @@ requires = [
 ]
 
 [tool.meson-python.args]
-install = ['--tags=data,python-runtime,runtime']
+install = ['--tags=data,python-runtime,runtime,tests']
 
 [tool.setuptools_scm]
 version_scheme = "release-branch-semver"