From c127f593b4c0ee51968c14b9a5f99ab5185f0633 Mon Sep 17 00:00:00 2001
From: Peter Vacho <pvacho@monetplus.cz>
Date: Mon, 22 Sep 2025 09:29:17 +0200
Subject: [PATCH] Update pythonrc

---
 home/.config/python/pythonrc.py | 39 +++++++++++++++++++++++----------
 1 file changed, 27 insertions(+), 12 deletions(-)

diff --git a/home/.config/python/pythonrc.py b/home/.config/python/pythonrc.py
index bf6051f..3c6cf66 100644
--- a/home/.config/python/pythonrc.py
+++ b/home/.config/python/pythonrc.py
@@ -1,29 +1,44 @@
+#!/usr/bin/env python3
+# This entire thing is unnecessary post v3.13.0a3
+# https://github.com/python/cpython/issues/73965
+
+import os
+import sys
+import atexit
+import readline
+from pathlib import Path
+
+
 def is_vanilla() -> bool:
-    import sys
-
-    return not hasattr(__builtins__, "__IPYTHON__") and "bpython" not in sys.argv[0]
+    """Check whether this is a vanilla Python interpreter below 3.13."""
+    return (
+        not hasattr(__builtins__, "__IPYTHON__")
+        and "bpython" not in sys.argv[0]
+        and sys.version_info < (3, 13)
+    )
 
 
-def setup_history():
-    import os
-    import atexit
-    import readline
-    from pathlib import Path
+def setup_history() -> None:
+    """Read and write history from state file."""
+    # Check PYTHON_HISTORY for future-compatibility with Python 3.13
+    if history := os.environ.get("PYTHON_HISTORY"):
+        history = Path(history)
 
-    if state_home := os.environ.get("XDG_STATE_HOME"):
+    # https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
+    elif state_home := os.environ.get("XDG_STATE_HOME"):
         state_home = Path(state_home)
     else:
         state_home = Path.home() / ".local" / "state"
 
-    history: Path = state_home / "python_history"
+    history: Path = history or state_home / "python_history"
 
     # https://github.com/python/cpython/issues/105694
     if not history.is_file():
         # breaks on macos + python3 without this.
         readline.write_history_file(str(history))
 
-    readline.read_history_file(str(history))
-    atexit.register(readline.write_history_file, str(history))
+    readline.read_history_file(history)
+    atexit.register(readline.write_history_file, history)
 
 
 if is_vanilla():