From 1f0533a92348fd1d56b5f8ccfc0c4915f2065c05 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Sun, 31 May 2026 21:23:21 -0700
Subject: [PATCH] Pin clang-20 install

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 .github/workflows/linux.yml | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 5cda5161..2a67495f 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -146,9 +146,13 @@ jobs:
 
     - name: Install LLVM-20
       run: |
-          wget https://apt.llvm.org/llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 20
+        sudo install -D -m 0644 support/llvm-snapshot.gpg.key \
+          /etc/apt/keyrings/apt.llvm.org.asc
+        codename=$(lsb_release -cs)
+        echo "deb [signed-by=/etc/apt/keyrings/apt.llvm.org.asc]" \
+             "https://apt.llvm.org/$codename/" \
+             "llvm-toolchain-$codename-20 main" \
+          | sudo tee /etc/apt/sources.list.d/llvm.list
       if: ${{ matrix.cxx == 'clang++-20' }}
 
     - name: Add Ubuntu mirrors