feat: bzl file per rule/provider (#1122)

This is basically a performance optimization. Bazel can only see that a
bzl file changed, not the particular contents. This means that any
downstream bzl file loading it is invalidated, even if it doesn't load
any of the affected code. As an example, if a package only loads
`py_library.bzl`, then changing `py_test.bzl` doesn't need to invalidate
all libraries.

* Also removes some more extraneous license comments

Work towards #1069

1 files changed, 19 insertions, 0 deletions

diff --git a/python/py_test.bzl b/python/py_test.bzl
new file mode 100644
index 0000000..84470bc
--- /dev/null
+++ b/python/py_test.bzl
@@ -0,0 +1,19 @@
+# Copyright 2023 The Bazel Authors. All rights reserved.
+#
+# 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
+#
+#     http://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.
+
+"""Public entry point for py_test."""
+
+load("//python/private:reexports.bzl", _py_test = "py_test")
+
+py_test = _py_test