// Find import data. This searches the file system for FILENAME and
// returns a pointer to a Stream object to read the data that it
// exports. LOCATION is the location of the import statement.
// Find import data. This searches the file system for FILENAME and
// returns a pointer to a Stream object to read the data that it
// exports. LOCATION is the location of the import statement.
- open_package(const std::string& filename, Location location);
+ open_package(const std::string& filename, Location location,
+ const std::string& relative_import_path);