Nondeterministic depgraph generation

[Keith Davies]

If you generate the same depgraph image repeatedly, you can get different images. All I have seen are *correct*, but the arrangement varies.

If you order the nodes when you select them, that should result in deterministic depgraph generation

[Keith Davies]

I have a fix for this in my local code (replace overloads on Node.gt and node.lt with Node.blocks() and Node.blockedby(), then call those functions instead)

Overloading gt and lt may be clever and look nice, but it makes for code that's nonobvious to readers and messes with sorting semantics. Once I removed the gt and lt overloads I as able to sort the nodes and edges, which gave me a consistent .dot file, which dot was able to render consistently.

[Keith Davies]

Patch file fixing #2332, #2333, #2336

[Noah Kantrowitz]

Fixed as of [2960].