[Future] Investigate replacing pip internals about passa HOT 3 OPEN

I'm curious about which things you have in mind here

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The short answer is all of them :p Realistically though, I’m probably going to first look into replacing the finder; it is likely the most difficult part to reach feature parity (dependency links, find links, etc.), and the most magical part (we just use the finder directly). I’m very intrigued what can be extracted out of it, and maybe contribute to distlib or another library.

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Dependency links go away next release of pip, I confirmed that.

The rest of it isn't actually that complicated, it's just parsing logic which is a pain in the ass. We might as well just do it in here though. You've already queried the simple api, and we query the json api as is. There isn't much reason to rely on pip for this at this point (I was hesitant to break away at first but feel more comfortable about it now)

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