internal: render.dict and render.select supports value_repr

This is to ensure that we can represent select of lists in a better way

Author: aignas

python/private/text_util.bzl

@@ -28,18 +28,18 @@ def _render_alias(name, actual):
         ")",
     ])
 
-def _render_dict(d):
+def _render_dict(d, *, value_repr = repr):
     return "\n".join([
         "{",
         _indent("\n".join([
-            "{}: {},".format(repr(k), repr(v))
+            "{}: {},".format(repr(k), value_repr(v))
             for k, v in d.items()
         ])),
         "}",
     ])
 
-def _render_select(selects, *, no_match_error = None):
-    dict_str = _render_dict(selects) + ","
+def _render_select(selects, *, no_match_error = None, value_repr = repr):
+    dict_str = _render_dict(selects, value_repr = value_repr) + ","
 
     if no_match_error:
         args = "\n".join([