Add command-line script for repo creation.

.gitignore

@@ -13,3 +13,4 @@ pytest_session.txt
 doc/_build
 doc/py-api
 butler_test_repository
+bin/*

bin.src/SConscript

@@ -0,0 +1,3 @@
+# -*- python -*-
+from lsst.sconsUtils import scripts
+scripts.BasicSConscript.shebang()

bin.src/makeButlerRepo.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+# This file is part of ci_hsc.
+#
+# Developed for the LSST Data Management System.
+# This product includes software developed by the LSST Project
+# (http://www.lsst.org).
+# See the COPYRIGHT file at the top-level directory of this distribution
+# for details of code ownership.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import argparse
+
+from lsst.daf.butler import Butler, Config
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Create an empty Gen3 Butler repository.")
+    parser.add_argument("root",
+                        help=("Filesystem path for the new repository.  "
+                              "Will be created if it does not exist."))
+    parser.add_argument("-c", "--config",
+                        help=("Path to an existing YAML config file to apply (on top of defaults)."))
+    parser.add_argument("--standalone", action="store_true", default=False,
+                        help=("Include all defaults in the config file in the repo, insulating "
+                              "the repo from changes in package defaults."))
+    args = parser.parse_args()
+    config = Config(args.config) if args.config is not None else None
+    Butler.makeRepo(args.root, config=config, standalone=args.standalone)