From d1ddb9a1a705baffb152fe49d288de18b14a0873 Mon Sep 17 00:00:00 2001
From: Josh Stone <cuviper@gmail.com>
Date: Mon, 20 Jul 2026 17:57:56 -0700
Subject: [PATCH] ci: Lock MSRV-compatible dependencies

Use the "fallback" resolver from newer Cargo to generate a `Cargo.lock`
with dependencies that are compatible with MSRV 1.71.
---
 .github/workflows/ci.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 65e44375..6cc01422 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,6 +42,12 @@ jobs:
           - nightly
     steps:
     - uses: actions/checkout@v4
+    - name: Lock MSRV-compatible dependencies
+      if: matrix.toolchain == '1.71.1'
+      env:
+        CARGO_RESOLVER_INCOMPATIBLE_RUST_VERSIONS: fallback
+      # Note that this uses the runner's pre-installed stable cargo
+      run: cargo generate-lockfile
     - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
     - name: Build
       run: cargo build --verbose