Fix

Author: ufechner7

bin/run_julia

@@ -6,6 +6,16 @@ fi
 
 export JULIA_PKG_SERVER_REGISTRY_PREFERENCE=eager
 
+# If any local project preferences file disables CondaPkg, forward that as an
+# env var so that Julia reads it at runtime even when activating a subproject
+# interactively (where @load_preference may have a stale baked-in value).
+for _lp in LocalPreferences.toml examples_cp/LocalPreferences.toml test/LocalPreferences.toml; do
+    if grep -q 'backend = "Null"' "$_lp" 2>/dev/null; then
+        export JULIA_CONDAPKG_BACKEND=Null
+        break
+    fi
+done
+
 if [[ $# -gt 0 ]]; then
     JULIA_ARGS=("$@")
 else