Revert to importing builtins from typing

core/dbt/parser/_dbt_prql.py

@@ -8,6 +8,10 @@
 import logging
 import re
 from collections import defaultdict
+import typing
+
+if typing.TYPE_CHECKING:
+    from dbt.parser.language_provider import references_type
 
 try:
     import prql_python  # type: ignore
@@ -37,9 +41,6 @@ def to_sql(prql):
 word_regex = r"[\w\.\-_]+"
 references_regex = rf"\bdbt `?(\w+)\.({word_regex})\.({word_regex})`?"
 
-# dict of ref_type (e.g. source, ref) -> (dict of (package, table) -> literal)
-references_type = dict[str, dict[tuple[str, str], str]]
-
 
 def compile(prql: str, references: references_type):
     """

core/dbt/parser/language_provider.py

@@ -7,7 +7,13 @@
     dbt_prql = None
 
 # dict of ref_type (e.g. source, ref) -> (dict of (package, table) -> literal)
-references_type = dict[str, dict[tuple[str, str], str]]
+# references_type = dict[str, dict[tuple[str, str], str]]
+
+# I can't get the above to work on CI; I had thought that it was fine with
+# from __future__ import annotations, but it seems not. So, we'll just use Dict.
+from typing import Dict, Tuple
+
+references_type = Dict[str, Dict[Tuple[str, str], str]]
 
 
 class LanguageProvider: