Update to Chronos V4

[gmega]

This PR contains the changes required to have Codex running on Chronos V4.

[gmega]

OK, to be able to wrap this up, we need the following to happen:

• having the Nim reset code fix backported and released in a 1.16.x version as this branch is currently building Nim from a "private" fork (public repo on my account). The alternative being extirpating all use of range types from the codebase;
• having the Nim sink parameter fix backported and released in an 1.16.x version: Chronos 4.0.1 disabled sink parameters for now),
• having the feat/chronos-v4 branch in nim-codex-dht merged;
• having the feat/chronos-v4 branch in nim-ethers merged, using @emizzle's branch;
• it currently requires the changes seen in my build improvements PR which I'd like to discuss with a wider audience.

Of course

• having an actual V4 tag to pin to

wouldn't hurt either, but that's not a blocker. 🙂

[emizzle]

nim-lang/Nim#23215 backported and released in a 1.16.x version as this branch is currently building Nim from a "private" fork (public repo on my account). The alternative being extirpating all use of range types from the codebase;
nim-lang/Nim#23354 backported and released in an 1.16.x version,

Where are we using these two in codex that is preventing us from getting a working solution for chronos v4?

[gmega]

nim-lang/Nim#23215 backported and released in a 1.16.x version as this branch is currently building Nim from a "private" fork (public repo on my account). The alternative being extirpating all use of range types from the codebase;
nim-lang/Nim#23354 backported and released in an 1.16.x version,

Where are we using these two in codex that is preventing us from getting a working solution for chronos v4?

These are compiler bugs which affect move and sink, respectively, both of which are key to Chronos v4; i.e., Chronos v4 uses them, not us. Both of them cause crashes in Codex due to memory corruption.

[elcritch]

Heads up Chronos v4.0.1 was released that removes all sink params https://forum.nim-lang.org/t/10914#73721

v4.0.1 tagged:
removes usage of sink (currently broken in all Nim versions, both refc/arc)
fixes some circular refs in timers for better ARC support
fixes a bunch of random bugs

[gmega]

Awesome, this unblocks our migration path. The unfortunate thing is that this has been bumped to low prio as it's too late for it to make it into the testnet.

[dryajov]

We should update this and plan on integrating it ASAP.

[gmega]

I'm closing this PR as we're going the v3 compat route (#814), which buys us some time to kick the can on debugging buggy deps down the road while still making progress on the v4 migration.