Add skeleton for backup module

pydatalab/backup.py

@@ -0,0 +1,10 @@
+from pathlib import Path
+
+
+def make_snapshot(output_path: Path):
+    """Make a snapshot of the entire datalab deployment that
+    can be restored from with sufficient granularity, e.g., including
+    config files.
+
+    """
+    pass

pydatalab/tasks.py

@@ -413,7 +413,7 @@ def generate_random_startingmaterial_id():
 def create_backup(_, config: BackupConfig):
     from fabric import Connection, Transfer
 
-    from pydatalab.utils import make_snapshot
+    from pydatalab.backup import make_snapshot
 
     print(f"Initialising backup procedure for {config.label=}")
     connection = Connection(config.hostname)