Refactor GC root refresh with array-based symlink handling

Author: linw1995

direnvrc

@@ -195,30 +195,18 @@ _nix_refresh_gcroots() {
   local layout_dir
   layout_dir=$(direnv_layout_dir)
 
-  # Touch flake profile gcroot if it exists
-  for profile_path in "${layout_dir}"/flake-profile*; do
-    if [[ -L $profile_path ]]; then
-      touch -h "$profile_path"
-    fi
-  done
-
-  # Touch flake inputs gcroots if they exist
-  local flake_inputs
-  flake_inputs="${layout_dir}/flake-inputs/"
-  if [[ -d $flake_inputs ]]; then
-    for input_path in "${flake_inputs}"/*; do
-      if [[ -L $input_path ]]; then
-        touch -h "$input_path"
-      fi
-    done
+  local symlinks
+  symlinks=(
+    # Touch flake profile gcroot if it exists
+    "${layout_dir}"/flake-profile-*
+    # Touch flake inputs gcroots if they exist
+    "${layout_dir}"/flake-inputs/*
+    # Touch nix profile gcroot if it exists
+    "${layout_dir}"/nix-profile-*
+  )
+  if ((${#symlinks[@]})); then
+    touch -h "${symlinks[@]}"
   fi
-
-  # Touch nix profile gcroot if it exists
-  for profile_path in "${layout_dir}"/nix-profile*; do
-    if [[ -L $profile_path ]]; then
-      touch -h "$profile_path"
-    fi
-  done
 }
 
 _nix_clean_old_gcroots() {