From 3be18abccd755d448386cae5c491ef07ffad90fc Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 24 Mar 2026 04:11:02 +0000
Subject: [PATCH] Bump pyrefly from 0.56.0 to 0.57.1 in /backend (#1622)
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Bumps [pyrefly](https://github.com/facebook/pyrefly) from 0.56.0 to
0.57.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/facebook/pyrefly/releases">pyrefly's
releases</a>.</em></p>
<blockquote>
<h2>Pyrefly v0.57.1</h2>
<p>Fixed a bug that could cause Pyrefly to hang.</p>
<h2>Pyrefly v0.57.0</h2>
<p><strong>Status: Beta</strong><br />
<em>Release date: March 16, 2026</em></p>
<p>Pyrefly 0.57.0 bundles <strong>116 commits</strong> from <strong>17
contributors</strong>.</p>
<hr />
<h2>✨ New &amp; Improved</h2>
<table>
<thead>
<tr>
<th align="left">Area</th>
<th align="left">What’s new</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left"><strong>Type Checking</strong></td>
<td align="left">- Improved type narrowing for <code>hasattr</code>
inside loops <!-- raw HTML omitted --><!-- raw HTML omitted -->-
<code>pyrefly suppress</code> no longer corrupts multiline
f-strings/t-strings by inserting suppression comments inside the string;
it now places comments above the string and also matches suppressions
correctly for errors inside multiline f/t-strings <!-- raw HTML omitted
--><!-- raw HTML omitted -->- Improved <code>namedtuple</code> support
with <code>*</code> field unpacking <!-- raw HTML omitted --><!-- raw
HTML omitted -->- Fewer false-positive “variable is not initialized”
errors</td>
</tr>
<tr>
<td align="left"><strong>Language Server</strong></td>
<td align="left">- if a nested pyproject.toml contains
<code>[tool.ruff]</code> / <code>[tool.mypy]</code> /
<code>[tool.pyright]</code>, it’s treated as a strong “this is a Python
project root” marker, preventing parent pyrefly.toml from incorrectly
shadowing it (notably improving go-to-def accuracy on some repos)</td>
</tr>
<tr>
<td align="left"><strong>Performance</strong></td>
<td align="left">- Typechecking speed has improved, making it now ~20%
faster to type check Pytorch on recent benchmarks</td>
</tr>
</tbody>
</table>
<hr />
<h2>🐛 bug fixes</h2>
<p>We closed 24 bug issues this release 👏</p>
<ul>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2696">#2696</a>:
Fixed an issue where Pyrefly’s LSP incorrectly flagged <code>from typing
import NewType</code> as unused, even when <code>NewType(...)</code> was
referenced.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2743">#2743</a>:
Fixed an issue where <code>TypedDict</code> fields named items/values
prevented access to the corresponding <code>dict.items()</code> /
<code>dict.values()</code> methods via attribute lookup.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2745">#2745</a>:
Fixed an issue where chained/nested narrowing expressions (e.g.
multi-clause and conditions) failed to narrow correctly when using
negative subscript indices.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2737">#2737</a>:
Fixed an issue where <code>functools.partial(...)</code> results
couldn’t be assigned back to a Callable typed with a
<code>ParamSpec</code>, causing a false-positive type error.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2650">#2650</a>:
Fixed an issue where a <code>Protocol</code> parameterized by
<code>ParamSpec[...]</code> wasn’t considered compatible with an
equivalent “gradual” protocol using <code>*args: Any, **kwargs:
Any</code>.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2334">#2334</a>:
Fixed an issue where calling <code>__init__</code> on parametrized bound
methods could trigger a false-positive type error due to incorrect
attribute lookup behavior.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/2731">#2731</a>:
Fixed an issue where <code>super()</code> calls to abstract methods that
do have a concrete runtime body were incorrectly reported as
missing-attribute / abstract-call errors.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/828">#828</a>:
Fixed an issue where reading a conditionally-initialized variable didn’t
“commit” the initialization, leading to redundant follow-on “may be
uninitialized” errors.</li>
<li><a
href="https://redirect.github.com/facebook/pyrefly/issues/835">#835</a>:
Fixed an issue where type information for subclasses wasn’t handled
correctly, leading to failures when type-checking subclass
relationships.</li>
<li>And more! <a
href="https://redirect.github.com/facebook/pyrefly/issues/2522">#2522</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/1800">#1800</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2736">#2736</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2382">#2382</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/913">#913</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/1397">#1397</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2261">#2261</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2669">#2669</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2744">#2744</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2739">#2739</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/1575">#1575</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/903">#903</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/1043">#1043</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/1429">#1429</a>,
<a
href="https://redirect.github.com/facebook/pyrefly/issues/2607">#2607</a></li>
</ul>
<p>Thank-you to all our contributors who found these bugs and reported
them! Did you know this is one of the most helpful contributions you can
make to an open-source project? If you find any bugs in Pyrefly we want
to know about them! Please open a bug report issue <a
href="https://github.com/facebook/pyrefly/issues">here</a></p>
<hr />
<h2>📦 Upgrade</h2>
<pre lang="shell"><code>pip install --upgrade pyrefly==0.57.0
</code></pre>
<h3>How to safely upgrade your codebase</h3>
<p>Upgrading the version of Pyrefly you're using or a third-party
library you depend on can reveal new type errors in your code. Fixing
them all at once is often unrealistic. We've written scripts to help you
temporarily silence them. After upgrading, follow these steps:</p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/facebook/pyrefly/commit/9d24c65115f0cda4620f12f5bf29d6b397793772"><code>9d24c65</code></a>
v0.57.1</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/0c8881eee7ef8a971b42e133ff4ab4626f742be6"><code>0c8881e</code></a>
Fix infinite loop in variance inference for self-referential generic
classes</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/12e59d0b0506480ab4bb7111ad50db480377ab11"><code>12e59d0</code></a>
Reviewed By: rchen152</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/e02d9948c8b2fde27c1d908b00456a27a90ed1a6"><code>e02d994</code></a>
Wire up Glean external references for incoming call hierarchy</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/3c5feafbcef5bd5b4d69d840a71fcad776d6a9ac"><code>3c5feaf</code></a>
Add convert_external_references_to_incoming_calls</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/8524405b3646ce2090e5474796ba3d0643937c98"><code>8524405</code></a>
add &quot;why you should use pyrefly&quot; FAQ</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/753c5a369a1b64d7b2ea1b12e8c2764b0b6d4507"><code>753c5a3</code></a>
Add PysaModuleIndex to replace cross-module ModuleContext::create
calls</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/651f4984b0c92369b9d1c426c351d5f0bb85d486"><code>651f498</code></a>
Optimise comment parsing</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/372fe49ab02f9bba9d0c9b26f2f65e634da7450e"><code>372fe49</code></a>
Remove unused code in the pyrefly_util crate</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/1998c105e63629bbfeee957eb6b14ec12e7c3061"><code>1998c10</code></a>
Remove unused code in the pyrefly_bundled crate</li>
<li>Additional commits viewable in <a
href="https://github.com/facebook/pyrefly/compare/0.56.0...0.57.1">compare
view</a></li>
</ul>
</details>
<br />


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---
 backend/pyproject.toml |  2 +-
 backend/uv.lock        | 22 +++++++++++-----------
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index a90edf17..4e835424 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -55,7 +55,7 @@ dev = [
     "mypy==1.19.0",
     "pluggy==1.6.0",
     "pylint==4.0.2",
-    "pyrefly==0.56.0",
+    "pyrefly==0.57.1",
     "pytest-asyncio==1.3.0",
     "pytest-cov==7.0.0",
     "pytest-xdist==3.8.0",
diff --git a/backend/uv.lock b/backend/uv.lock
index 43f05043..0965d1d7 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -408,7 +408,7 @@ dev = [
     { name = "mypy", specifier = "==1.19.0" },
     { name = "pluggy", specifier = "==1.6.0" },
     { name = "pylint", specifier = "==4.0.2" },
-    { name = "pyrefly", specifier = "==0.56.0" },
+    { name = "pyrefly", specifier = "==0.57.1" },
     { name = "pytest", specifier = "==9.0.1" },
     { name = "pytest-asyncio", specifier = "==1.3.0" },
     { name = "pytest-cov", specifier = "==7.0.0" },
@@ -1427,18 +1427,18 @@ wheels = [
 
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