From 86c11604bcbc9747d4029543e724fb4378fa4d8a Mon Sep 17 00:00:00 2001
From: yan <yan@localhost>
Date: Fri, 9 Oct 2026 14:14:35 +0300
Subject: [PATCH] ci: select the newest stable Xcode on the runner
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The runner's default toolchain is Swift 6.3, but Package.swift declares
swift-tools-version 6.4, so the manifest is rejected before anything
compiles. Hard-coding a path to Xcode_16.app does not help — that app
carries an older toolchain too, and the path is not stable across
runner images.

Use setup-xcode with latest-stable so the job tracks whatever the image
ships and fails loudly on the toolchain line if it is still too old.
---
 .github/workflows/ci.yml | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 53e2cba..872da82 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,14 +13,17 @@ concurrency:
 jobs:
   build-and-test:
     name: Build and test
-    runs-on: macos-latest
+    runs-on: macos-26
 
     steps:
       - uses: actions/checkout@v4
 
-      # macos-latest already ships the default Xcode; selecting a version by path is
-      # brittle because runner images move it. Print it instead so a failure log says
-      # which toolchain produced it.
+      # This manifest declares swift-tools-version 6.4, so the runner needs Xcode 26.
+      # macos-latest still ships an older default; select it explicitly.
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '26'
+
       - name: Show toolchain
         run: |
           xcode-select -p