that's too much!

.venv/lib/python3.12/site-packages/fiona/fio/ls.py

@@ -0,0 +1,24 @@
+"""$ fiona ls"""
+
+
+import json
+
+import click
+from cligj import indent_opt
+
+import fiona
+from fiona.fio import options, with_context_env
+
+
+@click.command()
+@click.argument('input', required=True)
+@indent_opt
+@options.open_opt
+@click.pass_context
+@with_context_env
+def ls(ctx, input, indent, open_options):
+    """
+    List layers in a datasource.
+    """
+    result = fiona.listlayers(input, **open_options)
+    click.echo(json.dumps(result, indent=indent))