From 70efc141fee6657ef1073ac9fbddf5ce6f142ffb Mon Sep 17 00:00:00 2001
From: Matthias Krack <matthias.krack@psi.ch>
Date: Sun, 25 Jan 2026 11:04:01 +0100
Subject: [PATCH] Add hint message on failure

---
 make_cp2k.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/make_cp2k.sh b/make_cp2k.sh
index c763b5f1f3..309ea659b7 100755
--- a/make_cp2k.sh
+++ b/make_cp2k.sh
@@ -457,6 +457,10 @@ if [[ ! -d "${SPACK_BUILD_PATH}" ]]; then
   # Install CP2K dependencies via Spack
   if ! make -j"${NUM_PROCS}" --file=spack_makefile SPACK_COLOR=never --output-sync=recurse; then
     echo "ERROR: Building the CP2K dependencies with spack failed"
+    if [[ "${USE_EXTERNALS}" == "yes" ]]; then
+      echo "HINT:  Try to re-run the build with the --no_externals flag which avoids errors"
+      echo "       or conflicts caused by externals from the host system"
+    fi
     ${EXIT_CMD} 1
   fi