Graphviz output?

[Ekleog]

Hello,

I just came back to #8 ; and had an idea that might alleviate the need for it, and maybe be even better.

What would you think about, instead of outputting the diff as a tree, outputting as a dot file? The nix derivation graph is a graph and not a tree, and trying to lower the diff into a tree might be the reason why nix-diff's output is hard to read in practice when dealing with complete NixOS configurations.

So… what do you think about this idea?

[Gabriella439]

@Ekleog: I'd accept a pull request for this, but I'm unlikely to implement this myself

[domenkozar]

See #58 work that moves us closer to supporting graphviz.

There was also a very good talk at nixcon about diffing closures (same same, but different).