File no-importlib-on-py38.patch of Package python-signedjson

Index: signedjson-1.1.1/setup.py
===================================================================
--- signedjson-1.1.1.orig/setup.py
+++ signedjson-1.1.1/setup.py
@@ -41,7 +41,7 @@ setup(
         "pynacl>=0.3.0",
         "typing_extensions>=3.5",
         'typing>=3.5;python_version<"3.5"',
-        "importlib_metadata",
+        'importlib_metadata;python_version<"3.8"',
     ],
     long_description=read_file(("README.rst",)),
     keywords="json",
Index: signedjson-1.1.1/signedjson/__init__.py
===================================================================
--- signedjson-1.1.1.orig/signedjson/__init__.py
+++ signedjson-1.1.1/signedjson/__init__.py
@@ -12,7 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from importlib_metadata import version, PackageNotFoundError
+try:
+    from importlib.metadata import version, PackageNotFoundError
+except ImportError:
+    from importlib_metadata import version, PackageNotFoundError
 
 try:
     __version__ = version(__name__)