Make target_platforms an explicit list argument

Author: hartikainen

python/private/pypi/hub_builder.bzl

@@ -536,8 +536,8 @@ def _whl_repo(
             target_platforms = src.target_platforms if is_multiple_versions else []
             return struct(
                 repo_name = pypi_repo_name(
-                    normalize_name(src.distribution),
-                    *target_platforms
+                    whl_name = normalize_name(src.distribution),
+                    target_platforms = target_platforms,
                 ),
                 args = args,
                 config_setting = whl_config_setting(

python/private/pypi/whl_repo_name.bzl

@@ -61,7 +61,7 @@ def whl_repo_name(filename, sha256):
 
     return "_".join(parts)
 
-def pypi_repo_name(whl_name, *target_platforms):
+def pypi_repo_name(whl_name, target_platforms = []):
     """Return a valid whl_library given a requirement line.
 
     Args: