Only include builtin by default when no packages are supplied

main.go

@@ -295,19 +295,18 @@ func run() error {
 		}
 
 		pkgs = strings.Split(strings.TrimSpace(buf.String()), "\n")
-	}
 
-	// Always include the 'builtin' package as well, if not already present.
-	// It's to ensure that the links to types such as string, int, bool, any, etc. are accessible.
-	hasBuiltin := false
-	for _, pkg := range pkgs {
-		if pkg == "builtin" {
-			hasBuiltin = true
-			break
+		// Include the 'builtin' package as well, if not already present.
+		hasBuiltin := false
+		for _, pkg := range pkgs {
+			if pkg == "builtin" {
+				hasBuiltin = true
+				break
+			}
+		}
+		if !hasBuiltin {
+			pkgs = append(pkgs, "builtin")
 		}
-	}
-	if !hasBuiltin {
-		pkgs = append(pkgs, "builtin")
 	}
 
 	var newPkgs []string