create a pip_parse method in the builder

Author: aignas

python/private/pypi/extension.bzl

@@ -285,10 +285,7 @@ You cannot use both the additive_build_content and additive_build_content_file a
             else:
                 builder = pip_hub_map[pip_attr.hub_name]
 
-            builder.add(pip_attr = pip_attr)
-
-            # TODO @aignas 2025-05-19: express pip.parse as a series of configure calls
-            builder.create_whl_repos(
+            builder.pip_parse(
                 module_ctx,
                 pip_attr = pip_attr,
                 whl_overrides = whl_overrides,

python/private/pypi/hub_builder.bzl

@@ -79,6 +79,7 @@ def hub_builder(
         evaluate_markers = lambda *a, **k: _evaluate_markers(self, *a, **k),
         build = lambda: _build(self),
         create_whl_repos = lambda *a, **k: _create_whl_repos(self, *a, **k),
+        pip_parse = lambda *a, **k: _pip_parse(self, *a, **k),
     )
 
     # buildifier: enable=uninitialized
@@ -533,3 +534,12 @@ def _whl_repo(
             target_platforms = src.target_platforms,
         ),
     )
+
+def _pip_parse(self, module_ctx, pip_attr, whl_overrides):
+    self.add(pip_attr = pip_attr)
+
+    self.create_whl_repos(
+        module_ctx,
+        pip_attr = pip_attr,
+        whl_overrides = whl_overrides,
+    )