protected void toolchains(C context) throws Exception {
        Path userToolchainsFile = null;

        if (context.invokerRequest.options().altUserToolchains().isPresent()) {
            userToolchainsFile = context.cwdResolver.apply(
                    context.invokerRequest.options().altUserToolchains().get());

            if (!Files.isRegularFile(userToolchainsFile)) {
                throw new FileNotFoundException(

            return Optional.of(commandLine.getOptionValue(CLIManager.ALTERNATE_GLOBAL_SETTINGS));
        }
        return Optional.empty();
    }

    @Override
    public Optional<String> altUserToolchains() {
        if (commandLine.hasOption(CLIManager.ALTERNATE_USER_TOOLCHAINS)) {
            return Optional.of(commandLine.getOptionValue(CLIManager.ALTERNATE_USER_TOOLCHAINS));
        }
        return Optional.empty();