In order to do that, we need a rigorous definition of gerrymandering that isn't just "I know it when I see it." Even if we try to adopt some sort of strict mathematical criteria and algorithm for redistricting (such as optimizing for "compactness" using a Voronoi algorithm), there would always still be some amount of arbitrary human input that could be gamed (such as the location of seeds, in this example). Even if we went so far as to make a rule that everything must be randomized (which would possibly be bad for things like continuity of representation, by the way), we could still end up with people trying to influence the outcome by re-rolling the dice until they got a result they liked.

It's a hard (in both the computational sense and political sense) problem to solve.