XCM v3-ready environment

[hbulgarini]

Create a new local version of polkadot with XCM v3 changes back ported into it.

XCM v3 PR in Polkadot:
https://github.com/paritytech/polkadot/pulls?q=is%3Apr+is%3Aopen+xcm+v3

Main PR: paritytech/polkadot#4097

Cumulus companion account: paritytech/cumulus#697

@arturgontijo

[bernardoaraujor]

please correct me if I'm wrong:

the work here can be split into three pieces:

• a polkadot executable with XCMv3 enabled (coming from a branch of github.com/paritytech/polkadot with XCM v3 polkadot#4097 and Some late fixes for XCMv3 polkadot#5237 merged)
• a polkadot-collator executable with XCMv3 enabled (coming from a branch of github.com/paritytech/cumulus with XCM v3 Companion cumulus#697 merged and xcm_config.rs properly configured)
• a trappist-collator executable with XCMv3 enabled (coming from a branch on this repo, with xcm_config.rs properly configured)

[hbulgarini]

Please take into account that XCM configurations involves client and runtime. So for dmp/ump set up your statements are correct. Then for Polkadot, Trappist and any other parachain that we might use we need to configure the xcm_config.rs configuration file.

FYI on the runtime level the xcm_config.rs contains the pallet configuration for the XCM executor and the XCM pallet implemented in the runtime.

[arturgontijo]

Leaving my "working" branches here as references:

https://github.com/arturgontijo/polkadot/tree/trappist-xcm-v3
https://github.com/arturgontijo/cumulus/tree/trappist-xcm-v3
https://github.com/arturgontijo/trappist/tree/xcm-v3

All of them are using a "static" substrate repo:
https://github.com/arturgontijo/substrate

[bernardoaraujor]

I updated the forks from @arturgontijo to be compatible with v0.9.28.

But I had to fork again, which started to get a bit too complex to maintain.
So I asked permission to @dvdplm and created some branches for us on the upstream repos.

The following branches have been successfully tested for asset teleport and reserve-based transfers with XCMv3 and v0.9.28:

• https://github.com/paritytech/polkadot/tree/trappist-xcm-v3
• https://github.com/paritytech/cumulus/tree/trappist-xcm-v3
• https://github.com/paritytech/trappist/tree/xcm-v3

[hbulgarini]

@stiiifff can we close this issue as it has to be replaced by a new PR with the latest xcm v3 changes backported during the release? Also i think the efforts should be documented in a more descriptive way.

[stiiifff]

@hbulgarini closing as not relevant anymore.