From 32b5210648d2c421ec384ed70cc17c5b7017d64c Mon Sep 17 00:00:00 2001
From: Guillermo Rodriguez <guillermo@telos.net>
Date: Sat, 22 Mar 2025 16:54:00 -0300
Subject: [PATCH] Important RingBuffBytesSender fix on non batched mode! &
 downgrade nix-shell python to lowest supported

---
 default.nix             | 2 +-
 tractor/ipc/_ringbuf.py | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/default.nix b/default.nix
index 5a936971..31615def 100644
--- a/default.nix
+++ b/default.nix
@@ -13,6 +13,6 @@ pkgs.mkShell {
 
   shellHook = ''
     set -e
-    uv venv .venv --python=3.12
+    uv venv .venv --python=3.11
   '';
 }
diff --git a/tractor/ipc/_ringbuf.py b/tractor/ipc/_ringbuf.py
index 7d96eeda..10975b7a 100644
--- a/tractor/ipc/_ringbuf.py
+++ b/tractor/ipc/_ringbuf.py
@@ -512,6 +512,7 @@ class RingBuffBytesSender(trio.abc.SendChannel[bytes]):
         msg: bytes = struct.pack("<I", len(value)) + value
         if self.batch_size == 1:
             await self._sender.send_all(msg)
+            return
 
         self._batch += msg
         self._batch_msg_len += 1