Migrate from pendulum to arrow for dates (#63)

Changelog

@@ -1,8 +1,9 @@
-Version 0.1.57     unreleased
+Version 0.2.0      unreleased
 
 	* Migrate to Poetry v2 and project-managed Poetry plugins.
 	* Move configuration into pyproject.toml for pytest, mypy & coverage.
 	* Upgrade to gha-shared-workflows@v8 for Poetry v2 support.
+	* Migrate from pendulum to arrow for dates (interface change).
 	* Update all dependencies and outdated constraints.
 
 Version 0.1.56     02 Jan 2025

pyproject.toml

@@ -44,7 +44,7 @@ dynamic = [ "classifiers", "version" ]
 dependencies = [
    "attrs (>=24.2.0,<25.0.0)",
    "cattrs (>=24.1.2,<25.0.0)",
-   "pendulum (>=3.0.0,<4.0.0)",
+   "arrow (>=1.3.0,<2.0.0)",
 ]
 
 [project.urls]

src/apologies/game.py

@@ -38,11 +38,11 @@
 from enum import Enum
 from typing import Dict, List, Optional
 
-import pendulum
+from arrow import Arrow
+from arrow import utcnow as arrow_utcnow
 from attrs import define, field, frozen
-from pendulum.datetime import DateTime
 
-from .util import CattrConverter
+from .util import ISO_TIME_FORMAT, CattrConverter
 
 # Cattr converter that serializes/deserializes DateTime to an ISO 8601 timestamp
 _CONVERTER = CattrConverter()
@@ -425,21 +425,21 @@ class History:
         action(str): String describing the action
         color(Optional[PlayerColor]): Color of the player associated with the action
         card(Optional[CardType]): Card associated with the action
-        timestamp(DateTime): Timestamp tied to the action (defaults to current time)
+        timestamp(Arrow): Timestamp tied to the action (defaults to current time)
     """
 
     action: str
     color: Optional[PlayerColor] = None
     card: Optional[CardType] = None
-    timestamp: DateTime = field()
+    timestamp: Arrow = field()
 
     # noinspection PyUnresolvedReferences
     @timestamp.default
-    def _default_timestamp(self) -> DateTime:
-        return pendulum.now(pendulum.UTC)  # type: ignore[attr-defined,unused-ignore]
+    def _default_timestamp(self) -> Arrow:
+        return arrow_utcnow()
 
     def __str__(self) -> str:
-        time = self.timestamp.to_time_string()  # type: ignore[no-untyped-call,unused-ignore]
+        time = self.timestamp.format(ISO_TIME_FORMAT)
         color = "General" if not self.color else self.color.value
         action = self.action
         return "[%s] %s - %s" % (time, color, action)