Didn’t know about relativedelta. Thanks!

In fact, it would never equal 365 * 10 days.

Do you have a blog or something? Do you write about your experiences regarding this?

I’m happy with Arch (BTW) and have the same thoughts about NixOS.

even in a fresh install, my /etc directory is full of config files that I haven’t created. in clear linux, it starts completely empty.

Its approach to the /etc dir was great. I haven’t used it but read the documentation. Basically, all software come with default config files in /usr/lib/config or some directory like that. You create a config file in /etc only if you want to override some defaults, and if you want to reset all configuration you simply delete all files in /etc. I think it is a great system. Removes the clutter from among the user created config files and enables one to make an etc-files repo and keep track of system configuration via git, just like people do with their dot files and user configuration. But other than that, I had no reason to try it.