def loads(self, requirements_text):
        lines = re.findall(Requirement.spec_regex,
                           requirements_text,
                           re.MULTILINE)
        for line in lines:
            self.add(Requirement(line[0], "".join(line[1:])))
def setup_run_environment(self, env):
        bashrc = self.prefix.etc.bashrc
        try:
            env.extend(EnvironmentModifications.from_sourcing_file(
                bashrc, clean=True
            ))
        except Exception as e:
            msg = 'unexpected error when sourcing OpenFOAM bashrc [{0}]'
            tty.warn(msg.format(str(e)))