Thanks for your feedback, Efraim.

I'd be interested in knowing the difference between a compressed
/gnu/store and an uncompressed one.

I believe the `compsize` utility can give us an idea:

  sudo compsize /gnu/store

(It's a Guix package.)
Would you like to try it, Efraim?  Or Maxim?

-- 
Pierre Neidhardt
https://ambrevar.xyz/