From ef98c9c7ecd2f3a31da9b4b3bbb0e54badb5810c Mon Sep 17 00:00:00 2001
From: Dennis Klein <d.klein@gsi.de>
Date: Sun, 30 Nov 2025 16:03:39 +0100
Subject: [PATCH] ci: add --fresh flag to gcc installation

Force fresh concretization to avoid pulling gcc-runtime from public
buildcache which may be built with an incompatible gcc version.
---
 .github/workflows/buildcache.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/buildcache.yml b/.github/workflows/buildcache.yml
index d3ead0ba..bd238b5e 100644
--- a/.github/workflows/buildcache.yml
+++ b/.github/workflows/buildcache.yml
@@ -52,7 +52,7 @@ jobs:
       - name: Install GCC
         shell: spack-bash {0}
         run: |
-          spack install gcc@${{ matrix.gcc }}
+          spack install --fresh gcc@${{ matrix.gcc }}
           spack compiler find $(spack location -i gcc@${{ matrix.gcc }})
 
       - name: Install dependencies