From 5bd2a5bd24a5209b4604447f3eb03dad72f808d6 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 21 Jul 2026 04:13:15 +0000
Subject: [PATCH] Bump pyrefly from 1.0.0 to 1.1.1 in /backend (#1741)
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Bumps [pyrefly](https://github.com/facebook/pyrefly) from 1.0.0 to
1.1.1.
<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 v1.1.1</h2>
<p><em>Release date: June 18, 2026</em></p>
<p>Pyrefly v1.1.1 is a patch release with a single bug fix.</p>
<hr />
<h2>🐛 Bug fixes</h2>
<ul>
<li><strong><a
href="https://redirect.github.com/facebook/pyrefly/issues/3867">#3867</a>:</strong>
Fixed a regression introduced in 1.1.0 where <code>isinstance()</code>
narrowing of a union variable silently stopped working when an earlier
sibling branch in the same
<code>if</code>/<code>elif</code>/<code>else</code> chain narrowed a
different variable with <code>isinstance()</code> and returned. The
later narrowing left the union untouched, producing false
<code>missing-attribute</code> errors on code that checked correctly in
1.0.0.</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="bash"><code>pip install --upgrade pyrefly==1.1.1
</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>
<ol>
<li><code>pyrefly check --suppress-errors</code></li>
<li>Run your code formatter of choice</li>
<li><code>pyrefly check --remove-unused-ignores</code></li>
<li>Repeat until you achieve a clean formatting run and a clean type
check.</li>
</ol>
<p>This will add <code># pyrefly: ignore</code> comments to your code,
enabling you to silence errors and return to fix them later. This can
make the process of upgrading a large codebase much more manageable.</p>
<p>Read more about error suppressions in the <a
href="https://pyrefly.org/en/docs/error-suppressions/">Pyrefly
documentation</a>.</p>
<h2>Pyrefly v1.1.0</h2>
<p><em>Release date: June 17, 2026</em></p>
<p>Pyrefly v1.1.0 bundles <strong>250 commits</strong> from <strong>25
contributors</strong>.</p>
<hr />
<h2>✨ New &amp; Improved</h2>
<h3>Type Checking</h3>
<ul>
<li>Pyrefly now correctly narrows <code>TypedDict</code> types after
<code>isinstance(x, dict)</code> checks, treating them as runtime
<code>dict</code> instances while preserving field information in the
positive branch.</li>
<li>Type narrowing for bounded and constrained <code>TypeVar</code>s has
been significantly improved. <code>isinstance</code> checks now
correctly narrow <code>Self</code> and bounded type variables via their
disjoint-base representatives, and negative narrowing on bounded
TypeVars no longer produces false positives.</li>
<li>Constrained <code>TypeVar</code>s are now preserved through method
calls and binary operations, so <code>T &amp; int</code> where <code>T:
(int, str)</code> correctly returns <code>T &amp; int</code> instead of
losing the TypeVar.</li>
<li>Classes decorated with <code>@dataclass(slots=True)</code> are now
recognized as PEP 800 disjoint bases when they synthesize non-empty
<code>__slots__</code>, enabling proper multiple-inheritance conflict
detection and type narrowing.</li>
<li>Pyrefly now detects when methods override parent class methods
without using the <code>@override</code> decorator, and a new quick fix
can automatically add the decorator for you.</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/facebook/pyrefly/commit/b87de05834c401898c79fd9686b806c051dd3667"><code>b87de05</code></a>
cut 1.1.1</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/a297847fa0cee3a34b1dd2a055a70c1ebf3c0237"><code>a297847</code></a>
release notes for v1.1.1</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/4be867378805aa33bfe87d12e589561964a61b4f"><code>4be8673</code></a>
Fix isinstance narrowing silently breaking after a sibling branch
narrows ano...</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/67a11d42e5b1f141e3aa5340387da4f94292926d"><code>67a11d4</code></a>
cut 1.1.0</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/6eb38a7c373e760612524ef1803b8029714e08ae"><code>6eb38a7</code></a>
Handle empty name invalid syntax</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/54f61bc1042f368c9ed7b3cab4996a43bae51ec5"><code>54f61bc</code></a>
Resolve type-alias refs against their own module, not typing</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/fc495dc8a74201bcbcb464f092dd3ec5e963c906"><code>fc495dc</code></a>
add test for resolving type alias references</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/33de466bda7bb20fccfb45c3063ae543aa957164"><code>33de466</code></a>
Resolve real source locations by reusing the query transaction (<a
href="https://redirect.github.com/facebook/pyrefly/issues/3829">#3829</a>)</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/3fd550de5b5e01fb42e542e80eba18af7a51de9a"><code>3fd550d</code></a>
Teach the type converter to resolve export locations</li>
<li><a
href="https://github.com/facebook/pyrefly/commit/86f0da71bd5300188f1f3698720616d41d5bf64e"><code>86f0da7</code></a>
Lazy materialize implicit builtins</li>
<li>Additional commits viewable in <a
href="https://github.com/facebook/pyrefly/compare/1.0.0...1.1.1">compare
view</a></li>
</ul>
</details>
<br />


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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
---
 backend/pyproject.toml |  2 +-
 backend/uv.lock        | 26 ++++++++++++++------------
 2 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 554e846d..242bb4c8 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -55,7 +55,7 @@ dev = [
     "mypy==2.1.0",
     "pluggy==1.6.0",
     "pylint==4.0.2",
-    "pyrefly==1.0.0",
+    "pyrefly==1.1.1",
     "pytest-asyncio==1.4.0",
     "pytest-cov==7.1.0",
     "pytest-xdist==3.8.0",
diff --git a/backend/uv.lock b/backend/uv.lock
index a4644190..6e1168be 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -467,7 +467,7 @@ dev = [
     { name = "mypy", specifier = "==2.1.0" },
     { name = "pluggy", specifier = "==1.6.0" },
     { name = "pylint", specifier = "==4.0.2" },
-    { name = "pyrefly", specifier = "==1.0.0" },
+    { name = "pyrefly", specifier = "==1.1.1" },
     { name = "pytest", specifier = "==9.1.0" },
     { name = "pytest-asyncio", specifier = "==1.4.0" },
     { name = "pytest-cov", specifier = "==7.1.0" },
@@ -1510,19 +1510,21 @@ wheels = [
 
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