Compatibility Wrappers for rules_python

This directory contains wrappers around the standard rules_python rules (py_library, py_binary, py_test).

Purpose

These wrappers allow existing Python rules (which may contain non-standard or legacy attributes) to be built with standard open-source rules_python without modification to the source BUILD files.

Mechanism

Each wrapper (py_library.bzl, py_binary.bzl, py_test.bzl) imports the corresponding upstream rule and wraps it. A shared utility in common.bzl filters out known unsupported attributes before passing arguments to the upstream rule.

Attribute Support

Stripped Attributes (Unsupported)

The following attributes are automatically removed to prevent build errors:

strict_deps
lazy_imports
linking_mode
flaky_test_attempts (for py_test)

Usage

In your BUILD files, load these rules instead of the standard ones:

starlark

load(
    "//third_party/rules_python/python:defs.bzl",
    "py_binary",
    "py_library",
    "py_test",
)