def find_problems(project: Project) -> list[tuple[str, BaseFixer]]:
        """Get the problems in the project"""
        problems: list[tuple[str, BaseFixer]] = []
        for fixer in Command.get_fixers(project):
            if fixer.check():
                problems.append((fixer.identifier, fixer))
        return problems
Get the problems in the project
src/pdm/cli/commands/fix/__init__.py