From 695ed89b6ca27e00b8dcadfc2c84a6cb8162c69a Mon Sep 17 00:00:00 2001
From: Dennis Klein <d.klein@gsi.de>
Date: Mon, 1 Dec 2025 09:03:12 +0100
Subject: [PATCH] ci: fix gcc version disambiguation in setup-deps

Use JSON output and jq to select the newest installed gcc version
when multiple versions match, avoiding conflicts between system and
spack-installed compilers.
---
 .github/actions/setup-deps/action.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/actions/setup-deps/action.yml b/.github/actions/setup-deps/action.yml
index d020a11a..ad966472 100644
--- a/.github/actions/setup-deps/action.yml
+++ b/.github/actions/setup-deps/action.yml
@@ -36,7 +36,8 @@ runs:
       run: |
         echo "::group::Install GCC"
         spack install ${{ inputs.fresh == 'true' && '--fresh' || '' }} gcc@${{ inputs.gcc }} target=x86_64_v3
-        spack compiler find $(spack location -i gcc@${{ inputs.gcc }})
+        gcc_hash=$(spack find --json gcc@${{ inputs.gcc }} target=x86_64_v3 | jq -r 'sort_by(.version | split(".") | map(tonumber)) | last | .hash')
+        spack compiler find "$(spack location -i /$gcc_hash)"
         echo "::endgroup::"
 
     - name: Install dependencies