chore(signature model): fix python 3.8 compat

.pre-commit-config.yaml

@@ -70,8 +70,7 @@ repos:
         exclude: "test_apps|tools|docs|tests/examples|tests/docker_service_fixtures"
         additional_dependencies:
           [
-            polyfactory,
-            "git+https://github.com/jcrist/msgspec.git",
+            msgspec>=0.17.0,
             aiosqlite,
             annotated_types,
             async_timeout,
@@ -130,7 +129,7 @@ repos:
         exclude: "test_apps|tools|docs|_openapi|tests/examples|tests/docker_service_fixtures"
         additional_dependencies:
           [
-            "git+https://github.com/jcrist/msgspec.git",
+            msgspec>=0.17.0,
             aiosqlite,
             annotated_types,
             async_timeout,

litestar/_signature/model.py

@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 import re
-from typing import TYPE_CHECKING, Any, ClassVar, Literal, Optional, Sequence, Set, TypedDict, Union, cast
+from typing import TYPE_CHECKING, Any, ClassVar, Dict, Literal, Optional, Sequence, Set, TypedDict, Union, cast
 
 from msgspec import NODEFAULT, Meta, Struct, ValidationError, convert, defstruct
 from msgspec.structs import asdict
@@ -59,9 +59,10 @@ class ErrorMessage(TypedDict):
 class SignatureModel(Struct):
     """Model that represents a function signature that uses a msgspec specific type or types."""
 
+    # NOTE: we have to use Set and Dict here because python 3.8 goes haywire if we use 'set' and 'dict'
     dependency_name_set: ClassVar[Set[str]]
+    fields: ClassVar[Dict[str, FieldDefinition]]
     return_annotation: ClassVar[Any]
-    fields: ClassVar[dict[str, FieldDefinition]]
 
     @classmethod
     def _create_exception(cls, connection: ASGIConnection, messages: list[ErrorMessage]) -> Exception:

litestar/serialization.py

@@ -68,7 +68,7 @@ def _enc_constrained_date(date: ConstrainedDate) -> str:
     return date.isoformat()
 
 
-def _enc_pattern(pattern: Pattern) -> Any:
+def _enc_pattern(pattern: Pattern[str]) -> Any:
     return pattern.pattern
 
 

pyproject.toml

@@ -88,7 +88,7 @@ importlib-resources = { version = ">=5.12.0", python = "<3.9" }
 jinja2 = { version = ">=3.1.2", optional = true }
 jsbeautifier = { version = "*", optional = true }
 mako = { version = ">=1.2.4", optional = true }
-msgspec = { git = "https://github.com/jcrist/msgspec.git", branch = "main" }
+msgspec = ">=0.17.0"
 multidict = ">=6.0.2"
 opentelemetry-instrumentation-asgi = { version = "*", optional = true }
 picologging = { version = "*", optional = true }