Vendor dependencies

Let's see how I like this workflow.

vendor/cxx/tools/buck/prelude/zip_file/tools/TARGETS.v2

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+python_bootstrap_binary(
+    name = "unzip",
+    main = "unzip.py",
+    visibility = ["PUBLIC"],
+)

vendor/cxx/tools/buck/prelude/zip_file/tools/unzip.py

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+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under both the MIT license found in the
+# LICENSE-MIT file in the root directory of this source tree and the Apache
+# License, Version 2.0 found in the LICENSE-APACHE file in the root directory
+# of this source tree.
+
+import argparse
+import sys
+import zipfile
+
+
+def _parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--src", required=True, help="File to extract")
+    parser.add_argument("--dst", required=True, help="Output directory")
+
+    return parser.parse_args()
+
+
+def do_unzip(src, dst):
+    z = zipfile.ZipFile(src)
+    z.extractall(dst)
+
+
+def main():
+    args = _parse_args()
+    print("Source zip is: {}".format(args.src), file=sys.stderr)
+    print("Output destination is: {}".format(args.dst), file=sys.stderr)
+    do_unzip(args.src, args.dst)
+
+
+if __name__ == "__main__":
+    main()

vendor/cxx/tools/buck/prelude/zip_file/zip_file.bzl

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+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under both the MIT license found in the
+# LICENSE-MIT file in the root directory of this source tree and the Apache
+# License, Version 2.0 found in the LICENSE-APACHE file in the root directory
+# of this source tree.
+
+load(":zip_file_toolchain.bzl", "ZipFileToolchainInfo")
+
+def zip_file_impl(ctx: "context") -> ["provider"]:
+    """
+     zip_file() rule implementation
+
+    Args:
+        ctx: rule analysis context
+    Returns:
+        list of created providers
+    """
+
+    zip_file_toolchain = ctx.attrs._zip_file_toolchain[ZipFileToolchainInfo]
+    create_zip_tool = zip_file_toolchain.create_zip
+
+    zip_output_name = ctx.attrs.out if ctx.attrs.out else "{}.zip".format(ctx.label.name)
+    output = ctx.actions.declare_output(zip_output_name)
+
+    on_duplicate_entry = ctx.attrs.on_duplicate_entry
+    entries_to_exclude = ctx.attrs.entries_to_exclude
+    zip_srcs = ctx.attrs.zip_srcs
+    srcs = ctx.attrs.srcs
+
+    create_zip_cmd = cmd_args([
+        create_zip_tool,
+        "--output_path",
+        output.as_output(),
+        "--on_duplicate_entry",
+        on_duplicate_entry if on_duplicate_entry else "overwrite",
+    ])
+
+    if srcs:
+        srcs_file_cmd = cmd_args()
+
+        # add artifact and is_source flag pair
+        for src in srcs:
+            srcs_file_cmd.add(src)
+            srcs_file_cmd.add(src.short_path)
+            srcs_file_cmd.add(str(src.is_source))
+        entries_file = ctx.actions.write("entries", srcs_file_cmd)
+
+        create_zip_cmd.add("--entries_file")
+        create_zip_cmd.add(entries_file)
+        create_zip_cmd.hidden(srcs)
+
+    if zip_srcs:
+        create_zip_cmd.add("--zip_sources")
+        create_zip_cmd.add(zip_srcs)
+
+    if entries_to_exclude:
+        create_zip_cmd.add("--entries_to_exclude")
+        create_zip_cmd.add(entries_to_exclude)
+
+    ctx.actions.run(create_zip_cmd, category = "zip")
+
+    return [DefaultInfo(default_outputs = [output])]
+
+def _select_zip_file_toolchain():
+    # FIXME: prelude// should be standalone (not refer to fbsource//)
+    return "fbsource//xplat/buck2/platform/zip_file:zip_file"
+
+implemented_rules = {
+    "zip_file": zip_file_impl,
+}
+
+extra_attributes = {
+    "zip_file": {
+        "_zip_file_toolchain": attrs.default_only(attrs.exec_dep(
+            default = _select_zip_file_toolchain(),
+            providers = [
+                ZipFileToolchainInfo,
+            ],
+        )),
+    },
+}

vendor/cxx/tools/buck/prelude/zip_file/zip_file_toolchain.bzl

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+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under both the MIT license found in the
+# LICENSE-MIT file in the root directory of this source tree and the Apache
+# License, Version 2.0 found in the LICENSE-APACHE file in the root directory
+# of this source tree.
+
+ZipFileToolchainInfo = provider(
+    "ZipFile toolchain info",
+    fields = [
+        "create_zip",
+    ],
+)