Replace setup.py by a pyproject.toml setup

Change-Id: Id2ab8bd785f92dab516f81c3f6532f41b5036c47

10 files changed, 116 insertions, 89 deletions

diff --git a/.gitignore b/.gitignore
index 5c29283..4652040 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-build
+dist
 __pycache__
 pandora/*
 !pandora/__init__.py
diff --git a/README.md b/README.md
index 3a2ac32..e9233cc 100644
--- a/README.md
+++ b/README.md
@@ -3,11 +3,15 @@
 ## Install
 
 ```bash
-pip3 install -r requirements.txt
+git submodule update --init
+
+pip install -e . # With editable mode
+# Or
+pip install . # Without editable mode
 ```
 
-## Build grpc interfaces
+## Rebuild gRPC interfaces
 
 ```bash
-./setup.py build_grpc
+./_build/grpc.py
 ```
diff --git a/_build/__init__.py b/_build/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/_build/__init__.py
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
diff --git a/_build/grpc.py b/_build/grpc.py
new file mode 100755
index 0000000..ae020a2
--- /dev/null
+++ b/_build/grpc.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+# 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.
+
+"""Build gRPC pandora interfaces."""
+
+import os
+import pkg_resources
+from grpc_tools import protoc
+
+package_directory = os.path.dirname(os.path.realpath(__file__))
+
+
+def build():
+
+    os.environ['PATH'] = package_directory + ':' + os.environ['PATH']
+
+    proto_include = pkg_resources.resource_filename('grpc_tools', '_proto')
+
+    files = [
+        f'pandora/{f}' for f in os.listdir('proto/pandora') if f.endswith('.proto')]
+    protoc.main([
+        'grpc_tools.protoc',
+        '-Iproto',
+        f'-I{proto_include}',
+        '--python_out=.',
+        '--custom_grpc_out=.',
+    ] + files)
+
+
+if __name__ == '__main__':
+    build()
diff --git a/protoc-gen-custom_grpc b/_build/protoc-gen-custom_grpc
index 00e47a5..00e47a5 100755
--- a/protoc-gen-custom_grpc
+++ b/_build/protoc-gen-custom_grpc
diff --git a/mmi2grpc/__init__.py b/mmi2grpc/__init__.py
index a2b6530..2fd8603 100644
--- a/mmi2grpc/__init__.py
+++ b/mmi2grpc/__init__.py
@@ -12,7 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""Entry point to mmi2grpc."""
+"""Map Bluetooth PTS Man Machine Interface to Pandora gRPC calls."""
+
+__version__ = "0.0.1"
 
 from typing import List
 import time
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..6923987
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,14 @@
+[project]
+name = "mmi2grpc"
+authors = [{name = "Pandora", email = "pandora-core@google.com"}]
+readme = "README.md"
+dynamic = ["version", "description"]
+dependencies = ["grpcio >=1.41", "numpy >=1.22", "scipy >= 1.8"]
+
+[tool.flit.sdist]
+include = ["_build", "proto", "pandora"]
+
+[build-system]
+requires = ["flit_core==3.7.1", "grpcio-tools >=1.41"]
+build-backend = "_build.backend"
+backend-path = ["."]
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 7b45d0f..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-grpcio==1.41.0
-grpcio-tools==1.41.0
-numpy==1.22.3
-protobuf==3.18.1
-scipy==1.8.0
-six==1.16.0
diff --git a/setup.py b/setup.py
deleted file mode 100755
index 5a10a61..0000000
--- a/setup.py
+++ /dev/null
@@ -1,78 +0,0 @@
-#!/usr/bin/env python3
-
-# 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.
-
-"""Custom mmi2grpc setuptools commands."""
-
-from setuptools import setup, Command
-from setuptools.command.build_py import build_py
-import pkg_resources
-import os
-
-package_directory = os.path.dirname(os.path.realpath(__file__))
-
-os.environ["PATH"] = package_directory + ':' + os.environ["PATH"]
-
-
-class BuildGrpc(Command):
-    """gRPC build command."""
-    description = 'build grpc files'
-    user_options = []
-
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        from grpc_tools import protoc
-
-        proto_include = pkg_resources.resource_filename('grpc_tools', '_proto')
-
-        files = [f'pandora/{f}'
-                 for f in os.listdir('proto/pandora') if f.endswith('.proto')]
-        protoc.main([
-            'grpc_tools.protoc',
-            '-Iproto',
-            f'-I{proto_include}',
-            '--python_out=.',
-            '--custom_grpc_out=.',
-        ] + files)
-
-
-class BuildPyCommand(build_py):
-    """Custom build command."""
-
-    def run(self):
-        self.run_command('build_grpc')
-        build_py.run(self)
-
-
-setup(
-    name='mmi2grpc',
-    version='0.0.1',
-    packages=['mmi2grpc', 'pandora'],
-    install_requires=[
-        'grpcio',
-    ],
-    setup_requires=[
-        'grpcio-tools'
-    ],
-    cmdclass={
-        'build_grpc': BuildGrpc,
-        'build_py': BuildPyCommand,
-    }
-)