bazel 7 rename helper

Author: rickeylev

python/private/pypi/whl_extract.bzl

@@ -72,7 +72,7 @@ def whl_extract(rctx, *, whl_path, logger):
 
             for (src, dest) in merge_trees(src, rctx.path(dest_prefix)):
                 logger.debug(lambda: "Renaming: {} -> {}".format(src, dest))
-                rctx.rename(src, dest)
+                repo_utils.rename(rctx, src, dest)
 
             # TODO @aignas 2025-12-16: when moving scripts to `bin`, rewrite the #!python
             # shebang to be something else, for inspiration look at the hermetic

python/private/repo_utils.bzl

@@ -522,6 +522,31 @@ def _extract(mrctx, *, archive, supports_whl_extraction = False, **kwargs):
         if not mrctx.delete(archive):
             fail("Failed to remove the symlink after extracting")
 
+def _rename(mrctx, src, dest):
+    """Rename a file or directory.
+
+    TODO: remove when the earliest supported bazel version is at least 8.0.
+
+    Args:
+        mrctx: The repository context.
+        src: The source path.
+        dest: The destination path.
+    """
+    if hasattr(mrctx, "rename"):
+        mrctx.rename(src, dest)
+        return
+
+    # Fallback for Bazel versions that don't have mrctx.rename.
+    os_name = _get_platforms_os_name(mrctx)
+    if os_name == "windows":
+        # On Windows, use 'cmd.exe /c move'
+        result = mrctx.execute(["cmd.exe", "/C", "move", "/Y", str(src), str(dest)])
+    else:
+        result = mrctx.execute(["mv", str(src), str(dest)])
+
+    if result.return_code != 0:
+        fail("Failed to rename {} to {}: {}".format(src, dest, result.stderr))
+
 repo_utils = struct(
     # keep sorted
     execute_checked = _execute_checked,
@@ -535,6 +560,7 @@ repo_utils = struct(
     mkdir = _mkdir,
     norm_path = _norm_path,
     relative_to = _relative_to,
+    rename = _rename,
     is_relative_to = _is_relative_to,
     repo_root_relative_path = _repo_root_relative_path,
     which_checked = _which_checked,