The reason I ask about command line import is the following.
I have a collection of mixins/functions/placeholder selectors and it's global for my project. And I don't really like import it in every sass module I have (module is a page here, it may contain several .scss files).
So if I would have import command line option then I used it in my build script and pass fixed "path/to/global.scss" there.
It's like a --require option but for sass code rather than Ruby code.
Yes, I can generate that @import and use --stdin option. But it's kinda quick and dirty, don't you think?