build_rocky: use uv to acquire more recent version of Python

nix/build-all.py

@@ -1,4 +1,6 @@
 #!/usr/bin/python
+# /// script
+# ///
 ###############################################################################
 #                                                                             #
 # This file is part of IfcOpenShell.                                          #
@@ -126,13 +128,7 @@ from collections.abc import Generator, Sequence
 from pathlib import Path
 from urllib.request import urlretrieve
 
-try:
-    from typing import Literal, Union
-except:
-    # python 3.6 compatibility for rocky 8
-    from typing import Union
-
-    from typing_extensions import Literal
+from typing import Literal, Union
 
 logger = logging.getLogger(__name__)
 logger.setLevel(logging.INFO)

nix/cache_dependencies.py

@@ -1,3 +1,5 @@
+# /// script
+# ///
 """
 Cache built dependencies for builds.