From 1475111f7f9c3ddb2b12b5b2edccf648cf7587c6 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Sat, 14 Jun 2025 06:10:47 -0400
Subject: [PATCH] use different ccache storage keys for gcc and clang

---
 .github/workflows/check-cpp23.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/check-cpp23.yml b/.github/workflows/check-cpp23.yml
index 15b16e71e4..9a634b951f 100644
--- a/.github/workflows/check-cpp23.yml
+++ b/.github/workflows/check-cpp23.yml
@@ -55,8 +55,8 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ${{ env.CCACHE_DIR }}
-        key: linux-cpp23-ccache-${{ github.sha }}
-        restore-keys: linux-cpp23-ccache-
+        key: linux-cpp23-ccache-${{ matrix.idx }}-${{ github.sha }}
+        restore-keys: linux-cpp23-ccache-${{ matrix.idx }}
 
     - name: Building LAMMPS via CMake
       shell: bash