From cb5f6abdd0e59b08728cb9b3a429b9517ac65539 Mon Sep 17 00:00:00 2001
From: Jeremiah Lowin <153965+jlowin@users.noreply.github.com>
Date: Thu, 23 Jul 2026 20:51:43 -0400
Subject: [PATCH] Pin burner-redis below the Windows-crashing 0.1.7 release
 (#4618)
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* Pin burner-redis below the Windows-crashing 0.1.7 release

burner-redis 0.1.7 crashes the interpreter (native fault, no Python traceback)
running the memory:// task backend under pytest-xdist on Windows — reproduced on
GitHub Actions windows-latest via the 'Upgrade checks' workflow, confirmed
absent on macOS/Linux with the identical dependency versions.

pydocket only floors burner-redis at >=0.1.6, so capping pydocket's own version
is not enough: a resolver remains free to pick the newest burner-redis
satisfying that floor. fastmcp-tasks previously pinned pydocket>=0.20.0 with no
upper bound, so a fresh 'pip install fastmcp[tasks]' today can resolve straight
into the broken combination for a real Windows user on the default backend.

Pin burner-redis<0.1.7 directly, which in turn caps pydocket to <0.20.2 (the
last release that doesn't itself require burner-redis>=0.1.7). Verified the pin
holds under both locked and --upgrade (highest) resolution.

* Scope the burner-redis pin to Windows only

burner-redis 0.1.7 is confirmed fine on macOS/Linux (full suite green there with
the identical upgraded dependencies) - only Windows crashes. The previous
unconditional pin blocked every platform from newer pydocket/burner-redis
releases unnecessarily. Add sys_platform == 'win32' to the burner-redis
constraint so only Windows installs are capped.

Verified via uv pip compile --python-platform: macOS/Linux resolve to
burner-redis 0.1.7 / pydocket 0.23.0 (unblocked); Windows resolves to
burner-redis 0.1.6 / pydocket 0.20.1 (still capped).
---
 fastmcp_tasks/pyproject.toml | 11 +++++++++++
 uv.lock                      |  4 +++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/fastmcp_tasks/pyproject.toml b/fastmcp_tasks/pyproject.toml
index bed6d05f0..a491aaaa8 100644
--- a/fastmcp_tasks/pyproject.toml
+++ b/fastmcp_tasks/pyproject.toml
@@ -54,4 +54,15 @@ fallback-version = "0.0.0"
 dependencies = [
     "fastmcp-slim[server]=={{ version }}",
     "pydocket>=0.20.0",
+    # burner-redis 0.1.7's Windows build crashes the interpreter (native fault,
+    # no Python traceback) running the memory:// backend under pytest-xdist —
+    # reproduced on GitHub Actions windows-latest, confirmed absent on
+    # macOS/Linux with the same versions (full suite green there under the
+    # identical upgraded dependencies). pydocket only floors it at >=0.1.6, so
+    # capping pydocket alone is not enough: a resolver is free to pick the
+    # newest burner-redis satisfying that floor regardless. Pin burner-redis
+    # directly on Windows only (which in turn caps pydocket to <0.20.2 there,
+    # the last release that doesn't itself require burner-redis>=0.1.7) until
+    # upstream ships a fix — other platforms are unaffected and stay unpinned.
+    "burner-redis<0.1.7; sys_platform == 'win32'",
 ]
diff --git a/uv.lock b/uv.lock
index e235a7c2b..7bf07c4f6 100644
--- a/uv.lock
+++ b/uv.lock
@@ -10,7 +10,7 @@ resolution-markers = [
 ]
 
 [options]
-exclude-newer = "2026-07-17T00:06:59.485533Z"
+exclude-newer = "2026-07-17T00:42:32.518243Z"
 exclude-newer-span = "P1W"
 
 [options.exclude-newer-package]
@@ -1087,12 +1087,14 @@ provides-extras = ["anthropic", "apps", "azure", "client", "code-mode", "gemini"
 name = "fastmcp-tasks"
 source = { editable = "fastmcp_tasks" }
 dependencies = [
+    { name = "burner-redis", marker = "sys_platform == 'win32'" },
     { name = "fastmcp-slim", extra = ["server"] },
     { name = "pydocket" },
 ]
 
 [package.metadata]
 requires-dist = [
+    { name = "burner-redis", marker = "sys_platform == 'win32'", specifier = "<0.1.7" },
     { name = "fastmcp-slim", extras = ["server"], editable = "fastmcp_slim" },
     { name = "pydocket", specifier = ">=0.20.0" },
 ]