diff --git a/home-manager/modules/npm-globals/install-npm-globals.sh b/home-manager/modules/npm-globals/install-npm-globals.sh
index d717f0515..858f861b8 100755
--- a/home-manager/modules/npm-globals/install-npm-globals.sh
+++ b/home-manager/modules/npm-globals/install-npm-globals.sh
@@ -62,4 +62,19 @@ if [ -n "$OVERRIDES" ]; then
   fi
 fi
 
+# Deduplicate overridden packages from nested node_modules
+# Bun can install the same package at both top-level and nested locations.
+# When packages use Symbols (like pino), two copies create incompatible
+# instances. Remove nested copies of any overridden package so everything
+# resolves to the single top-level version.
+GLOBAL_MODULES="${HOME}/.bun/install/global/node_modules"
+for pkg in $(echo "$OVERRIDES" | jq -r 'keys[]' 2>/dev/null); do
+  find "$GLOBAL_MODULES" -mindepth 3 -maxdepth 4 -type d -name "$pkg" \
+    -path "*/node_modules/$pkg" \
+    ! -path "$GLOBAL_MODULES/$pkg" 2>/dev/null | while read -r nested; do
+    rm -r "$nested"
+    echo "Deduplicated nested $pkg: $nested"
+  done
+done
+
 echo "npm globals installation complete"
diff --git a/spec/npm_globals_spec.sh b/spec/npm_globals_spec.sh
index 273c92002..7943079e7 100644
--- a/spec/npm_globals_spec.sh
+++ b/spec/npm_globals_spec.sh
@@ -86,5 +86,15 @@ It 'runs bun install in global dir after applying overrides'
 When run bash -c "grep 'cd.*bun/install/global.*bun install' '$SCRIPT'"
 The output should include 'bun install'
 End
+
+It 'deduplicates nested copies of overridden packages'
+When run bash -c "grep 'Deduplicated nested' '$SCRIPT'"
+The output should include 'Deduplicated'
+End
+
+It 'finds nested node_modules with find command'
+When run bash -c "grep 'find.*GLOBAL_MODULES.*node_modules' '$SCRIPT'"
+The output should include 'find'
+End
 End
 End