Report graph

[raboof]

a graph seems easier to read than a tree

https://arnout.engelen.eu/minimal.html

[raboof]

moving this to draft because it makes it hard to search for derivations. not sure if this is the right direction.

[JulienMalka]

I like the design but I think we should have at least the tree view and as a nice to have the ability to switch between the views

[raboof]

Possibly!

To give a bit of background: the reason I started going down this path is because I wanted to add 'filtering' to the report, so you could do things like "show me only the paths from the root to derivations that couldn't be reproduced". In the current tree representation, we remove common subtrees by replacing them with ... when the are encountered for the second time. That gets awkward when filtering.

Perhaps as a simpler intermediate state we should just have a 'flat' list of derivations that couldn't be reproduced.