Review of pros and cons of package managers including Guix

[swedebugia]

Hi

I stumpled upon this today:

https://www.slant.co/topics/344/~best-linux-package-managers

Insights from the Guix-section:

4 pros: (missing the roll-back feature) see link.

1 cons:

"Cannot handle filetypes that have different semantics across different 
versions
While the functional approach that Guix takes is great for sandboxing 
binary artifacts of packages, it seriously lacks any power in handling 
configuration files or user data. It's difficult to upgrade and 
downgrade files where semantics and syntax can change between versions."

Do you agree with this critique?

Should we ask the author to give an example of this?

--
Cheers
Swedebugia