Fix datetime.datetime.utcnow DeprecationWarning

gemato/cli.py

@@ -453,7 +453,7 @@ def __call__(self):
 
             LOGGER.info(f'Updating Manifests in {p}...')
 
-            start_ts = datetime.datetime.utcnow()
+            start_ts = datetime.datetime.now(datetime.timezone.utc)
             m.update_entries_for_directory(relpath, **update_kwargs)
 
             # write TIMESTAMP if requested, or if already there
@@ -509,7 +509,7 @@ def __call__(self):
 
             LOGGER.info(f'Creating Manifests in {p}...')
 
-            start_ts = datetime.datetime.utcnow()
+            start_ts = datetime.datetime.now(datetime.timezone.utc)
             m.update_entries_for_directory()
 
             # write TIMESTAMP if requested

gemato/openpgp.py

@@ -791,7 +791,7 @@ def verify_file(self, f):
                 if not vr:
                     raise OpenPGPVerificationFailure(
                         f'Bad signature made by key {k.fingerprint}')
-                now = datetime.datetime.utcnow()
+                now = datetime.datetime.now(datetime.timezone.utc)
                 sig_expire = msg.signatures[0].expires_at
                 if sig_expire is not None and sig_expire < now:
                     raise OpenPGPVerificationFailure(

tests/test_recursiveloader.py

@@ -783,7 +783,7 @@ class MismatchedFileFutureTimestampLayout(BaseLayout):
     @classmethod
     def create(cls, tmp_path):
         super().create(tmp_path)
-        future_dt = (datetime.datetime.utcnow() +
+        future_dt = (datetime.datetime.now(datetime.timezone.utc) +
                      datetime.timedelta(days=1))
         with open(tmp_path / 'Manifest', 'w') as f:
             f.write(cls.MANIFESTS['Manifest'].replace(

utils/gen_fast_metamanifest.py

@@ -116,7 +116,7 @@ def gen_metamanifest(top_dir, pgp_key):
     p.map(gen_fast_manifest.gen_manifest, manifest_dir_generator(1), chunksize=64)
 
     # special directories: we split Manifest there, and add timestamp
-    ts = datetime.datetime.utcnow().strftime(
+    ts = datetime.datetime.now(datetime.timezone.utc).strftime(
             'TIMESTAMP %Y-%m-%dT%H:%M:%SZ\n').encode('ascii')
     make_toplevel('metadata/glsa', ts, pgp_key)
     make_toplevel('metadata/news', ts, pgp_key)
@@ -129,7 +129,7 @@ def gen_metamanifest(top_dir, pgp_key):
     p.map(gen_fast_manifest.gen_manifest, list(manifest_dir_generator(4)))
 
     # final split
-    ts = datetime.datetime.utcnow().strftime(
+    ts = datetime.datetime.now(datetime.timezone.utc).strftime(
             'TIMESTAMP %Y-%m-%dT%H:%M:%SZ\n').encode('ascii')
     make_toplevel('', ts, pgp_key)