1 files changed, 47 insertions, 0 deletions
diff --git a/_build/backend.py b/_build/backend.py
new file mode 100644
index 0000000..f25546b
--- /dev/null
+++ b/_build/backend.py
@@ -0,0 +1,47 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""PEP517 build backend."""
+
+from .grpc import build as build_pandora_grpc
+
+from flit_core.wheel import WheelBuilder
+# Use all build hooks from flit
+from flit_core.buildapi import *
+
+
+# Build grpc interfaces when this build backend is invoked
+build_pandora_grpc()
+
+# flit only supports copying one module, but we need to copy two of them
+# because protobuf forces the use of absolute imports.
+# So Monkey patches WheelBuilder#copy_module to copy pandora folder too.
+# To avoid breaking this, the version of flit_core is pinned in pyproject.toml.
+old_copy_module = WheelBuilder.copy_module
+
+
+def copy_module(self):
+    from flit_core.common import Module
+
+    old_copy_module(self)
+
+    module = self.module
+
+    self.module = Module('pandora', self.directory)
+    old_copy_module(self)
+
+    self.module = module
+
+
+WheelBuilder.copy_module = copy_module