feature request: Allow multiple --root arguments

[anka-213]

I want to compare two closures and see what is shared and what is not. As far as I can tell, I can't do that with nix-du without first building a derivation that depends on both (or using nix-du on my entire system and filtering out the parts I'm interested in)?

Using multiple -r arguments gives the error:

error: the argument '--root <PATH>' cannot be used multiple times

[symphorien]

that makes sense however tbh I don't plan on spending much time on nix-du in the near future.

[anka-213]

Thanks for the quick reply! Would you be open to a pull request for this?

[symphorien]

sure