autogenerate-rpc-examples.py: disable entropy for generation.

diff --git a/contrib/pyln-testing/pyln/testing/utils.py b/contrib/pyln-testing/pyln/testing/utils.py
index ff0886d..b40184c 100644
--- a/contrib/pyln-testing/pyln/testing/utils.py
+++ b/contrib/pyln-testing/pyln/testing/utils.py
@@ -935,6 +935,7 @@ class LightningNode(object):
                  executable=None,
                  bad_notifications=False,
                  old_hsmsecret=None,
+                 no_entropy=False,
                  **kwargs):
         self.bitcoin = bitcoind
         self.executor = executor
@@ -946,6 +947,7 @@ class LightningNode(object):
         self.allow_warning = allow_warning
         self.db = db
         self.lightning_dir = Path(lightning_dir)
+        self.no_entropy = no_entropy
 
         # Assume successful exit
         self.rc = 0
@@ -1000,6 +1002,8 @@ class LightningNode(object):
         # Avoid test flakes cause by this option unless explicitly set.
         if self.cln_version >= "v24.11":
             self.daemon.opts.update({"autoconnect-seeker-peers": 0})
+        if no_entropy:
+            self.daemon.env["CLN_DEV_ENTROPY_SEED"] = str(node_id)
 
         jsondir = Path(lightning_dir) / "plugin-io"
         jsondir.mkdir()
@@ -1780,6 +1784,7 @@ class NodeFactory(object):
             'start',
             'gossip_store_file',
             'old_hsmsecret',
+            'no_entropy',
         ]
         node_opts = {k: v for k, v in opts.items() if k in node_opt_keys}
         cli_opts = {k: v for k, v in opts.items() if k not in node_opt_keys}
diff --git a/tests/autogenerate-rpc-examples.py b/tests/autogenerate-rpc-examples.py
index 857dab9..52b5aa7 100644
--- a/tests/autogenerate-rpc-examples.py
+++ b/tests/autogenerate-rpc-examples.py
@@ -451,6 +451,7 @@ def setup_test_nodes(node_factory, bitcoind):
                 'log-level': 'debug',
                 'broken_log': '.*',
                 'dev-bitcoind-poll': 3,    # Default 1; increased to avoid rpc failures
+                'no_entropy': True,
             }.copy()
             for i in range(6)
         ]
@@ -1322,6 +1323,7 @@ def generate_splice_examples(node_factory, bitcoind):
                 'allow_bad_gossip': True,
                 'broken_log': '.*',
                 'dev-bitcoind-poll': 3,
+                'no_entropy': True,
             }.copy()
             for i in range(2)
         ]
@@ -1396,6 +1398,7 @@ def generate_channels_examples(node_factory, bitcoind, l1, l3, l4, l5):
                 'allow_bad_gossip': True,
                 'broken_log': '.*',
                 'dev-bitcoind-poll': 3,
+                'no_entropy': True,
             }.copy()
             for i in range(2)
         ]
@@ -1446,6 +1449,7 @@ def generate_channels_examples(node_factory, bitcoind, l1, l3, l4, l5):
                 'allow_bad_gossip': True,
                 'broken_log': '.*',
                 'dev-bitcoind-poll': 3,
+                'no_entropy': True,
             }.copy()
             for i in range(2)
         ]
@@ -1782,7 +1786,7 @@ def generate_backup_recovery_examples(node_factory, l4, l5, l6):
         logger.info('Backup and Recovery Start...')
 
         # New node l13 used for recover and exposesecret examples
-        l13 = node_factory.get_node(options={'exposesecret-passphrase': "test_exposesecret"})
+        l13 = node_factory.get_node(options={'exposesecret-passphrase': "test_exposesecret"}, no_entropy=True)
         update_example(node=l13, method='exposesecret', params={'passphrase': 'test_exposesecret'})
         update_example(node=l13, method='exposesecret', params=['test_exposesecret', 'cln2'])
 
@@ -2102,6 +2106,10 @@ def test_generate_examples(node_factory, bitcoind, executor):
         logger.warning(f'This test ignores {len(IGNORE_RPCS_LIST)} rpc methods: {IGNORE_RPCS_LIST}')
         REGENERATING_RPCS = [rpc.strip() for rpc in os.getenv("REGENERATE").split(', ')] if os.getenv("REGENERATE") else ALL_RPC_EXAMPLES
         list_missing_examples()
+
+        # We make sure everyone is on predicable time
+        os.environ['CLN_DEV_SET_TIME'] = '1738000000'
+
         l1, l2, l3, l4, l5, l6, c12, c23, c25 = setup_test_nodes(node_factory, bitcoind)
         c23_2, c23res2, c34_2, inv_l11, inv_l21, inv_l22, inv_l31, inv_l32, inv_l34 = generate_transactions_examples(l1, l2, l3, l4, l5, c25, bitcoind)
         rune_l21 = generate_runes_examples(l1, l2, l3)