return returnFirstPresentOrEmpty(Options::altInstallationSettings);
    }

    @Override
    public Optional<String> altUserToolchains() {
        return returnFirstPresentOrEmpty(Options::altUserToolchains);
    }

    @Override
    public Optional<String> altInstallationToolchains() {
        return returnFirstPresentOrEmpty(Options::altInstallationToolchains);
    }

        Path userToolchainsFile = null;
        if (context.options().altUserToolchains().isPresent()) {
            userToolchainsFile =
                    context.cwd.resolve(context.options().altUserToolchains().get());

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

                .ifPresent(installationSettings -> failIfFileNotExists(
                        context, installationSettings, "The specified installation settings file does not exist"));
        options.altUserToolchains()
                .ifPresent(userToolchains -> failIfFileNotExists(
                        context, userToolchains, "The specified user toolchains file does not exist"));
        options.altInstallationToolchains()

            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();