From 811ec15ec017401f6e0e1916b765dcf96d3c50e1 Mon Sep 17 00:00:00 2001
From: Michael Schellenberger Costa <miscco@nvidia.com>
Date: Mon, 9 Oct 2023 21:50:55 +0200
Subject: [PATCH] Only remove newly installed llvm packages and not always
 everything

---
 features/src/llvm/install.sh | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/features/src/llvm/install.sh b/features/src/llvm/install.sh
index 7e5c45f70..e7eb8f28f 100755
--- a/features/src/llvm/install.sh
+++ b/features/src/llvm/install.sh
@@ -41,7 +41,14 @@ echo "Installing llvm-${LLVM_VERSION} compilers and tools";
 ./llvm.sh $LLVM_VERSION ${PACKAGES:-all};
 
 # Remove existing, install, and set default clang/llvm alternatives
-for x in clang clangd clang++ clang-format clang-tidy lldb llvm-config llvm-cov; do
+if [[ -z "$PACKAGES" \
+      || "$PACKAGES" == "all"
+]]; then
+    INSTALLED_PACKAGES=(clang clangd clang++ clang-format clang-tidy lldb llvm-config llvm-cov);
+else
+    INSTALLED_PACKAGES=${PACKAGES};
+fi
+for x in ${INSTALLED_PACKAGES[@]} do
     if type ${x}-${LLVM_VERSION} >/dev/null 2>&1; then
         (update-alternatives --remove-all ${x} >/dev/null 2>&1 || true);
         (update-alternatives --install /usr/bin/${x} ${x} $(which ${x}-${LLVM_VERSION}) 30);