"but these conflict with your requirements or minimum-stability"

[fwegberts]

Magento 2.2.2 problems with installing trough composer. What to do?

Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for rubic/magento2-module-clean-checkout ^1.6 -> satisfiable by rubic/magento2-module-clean-checkout[1.6.0].
- rubic/magento2-module-clean-checkout 1.6.0 requires hybridauth/hybridauth ^3.0 -> satisfiable by hybridauth/hybridauth[3.0.x-dev, v3.0.0-beta.1, v3.0.0-beta.2, v3.0.0-beta.3, v3.0.0-beta.4, v3.0.0-rc.1, v3.0.0-rc.2, v3.0.0-rc.3] but these conflict with your requirements or minimum-stability.

[danslo]

Known issue, see this page for a (temporary) work around.