chore: stringify type aliases, so that Python 3.8 doesn't get confused

Author: dimaqq

juju/client/connection.py

@@ -26,7 +26,7 @@
 from .facade import _JSON, _RICH_JSON, TypeEncoder
 from .facade_versions import client_facade_versions, known_unsupported_facades
 
-SPECIFIED_FACADES: TypeAlias = dict[str, dict[Literal["versions"], Sequence[int]]]
+SPECIFIED_FACADES: TypeAlias = "dict[str, dict[Literal['versions'], Sequence[int]]]"
 _WebSocket: TypeAlias = "websockets.legacy.client.WebSocketClientProtocol"
 
 LEVELS = ["TRACE", "DEBUG", "INFO", "WARNING", "ERROR"]

juju/client/facade.py

@@ -23,7 +23,7 @@
 from . import codegen
 
 # Plain JSON, what is received from Juju
-_JSON_LEAF: TypeAlias = None | bool | int | float | str
+_JSON_LEAF: TypeAlias = "None | bool | int | float | str"
 _JSON: TypeAlias = "_JSON_LEAF|list[_JSON]|dict[str, _JSON]"
 
 # Type-enriched JSON, what can be sent to Juju