Chrome OS is based on Gentoo but it'll now run a virtualized Debian to run linux apps on it side by side with the Chrome browser and Android apps. https://www.theverge.com/circuitbre...update-new-features-linux-apps-google-io-2018
Linux apps on Chrome OS coming to 18 more Chromebooks June 28, 2018 https://www.theverge.com/circuitbre...0/chromebooks-intel-apollo-lake-linux-support
This - plus Fuchsia - may render the traditional distros irrelevant in a few years. That's my prophecy of doom. Mrk