Add macros for unpacking wheels and using the wheels content in py_li…

…brary.

PiperOrigin-RevId: 688169758

opensource_only.files

@@ -108,6 +108,7 @@ third_party/py/python_init_repositories.bzl:
 third_party/py/python_init_rules.bzl:
 third_party/py/python_init_toolchains.bzl:
 third_party/py/python_repo.bzl:
+third_party/py/python_wheel_library.bzl:
 third_party/pybind11.BUILD:
 third_party/pybind11_bazel/BUILD:
 third_party/python_runtime/BUILD:

third_party/py/python_wheel_library.bzl

@@ -0,0 +1,39 @@
+""" Macros to unpack a wheel and use its content as a py_library. """
+
+def _unpacked_wheel_impl(ctx):
+    output_dir = ctx.actions.declare_directory(ctx.label.name)
+    ctx.actions.run(
+        inputs = [ctx.file.wheel],
+        outputs = [output_dir],
+        executable = ctx.executable.zipper,
+        arguments = ["x", ctx.file.wheel.path, "-d", output_dir.path],
+    )
+    return [
+        DefaultInfo(files = depset([output_dir])),
+    ]
+
+_unpacked_wheel = rule(
+    implementation = _unpacked_wheel_impl,
+    attrs = {
+        "wheel": attr.label(mandatory = True, allow_single_file = True),
+        "zipper": attr.label(
+            default = Label("@bazel_tools//tools/zip:zipper"),
+            cfg = "exec",
+            executable = True,
+        ),
+    },
+)
+
+def wheel_library(name, wheel, deps):
+    unpacked_wheel_name = name + "_unpacked_wheel"
+    _unpacked_wheel(
+        name = unpacked_wheel_name,
+        wheel = wheel,
+    )
+    native.py_library(
+        name = name,
+        data = [":" + unpacked_wheel_name],
+        imports = [unpacked_wheel_name],
+        deps = deps,
+        visibility = ["//visibility:public"],
+    )