Koute
402b64caf5
This PR improves compatibility with RISC-V and PolkaVM, allowing more runtimes to successfully compile. In particular, it makes the following changes: - The `sp-mmr-primitives` and `sp-consensus-beefy` crates unconditionally required an `std`-only dependency; now they only require those dependencies when the `std` feature is actually enabled. (Our RISC-V target is, unlike WASM, a true `no_std` target where you can't accidentally use stuff from `std` anymore.) - One of our dependencies (the `bitvec` trace) uses a crate called `radium` which doesn't compile under RISC-V due to incomplete autodetection logic in their `build.rs` file. The good news is that this is already fixed in the newest upstream version of `radium`, and the newest version of `bitvec` uses it. The bad news is that the newest version of `bitvec` is not currently released on crates.io, so we can't use it. I've [created an issue](https://github.com/ferrilab/ferrilab/issues/5) asking for a new release, but in the meantime I forked the currently used `radium` 0.7, [fixed the faulty logic](https://github.com/paritytech/radium-0.7-fork/commit/ed66c8a294b138c67f93499644051d97d4c7fbda) and used cargo's patching capabilities to use it for the RISC-V runtime builds. This might be a little hacky, but it is the least intrusive way to fix the problem, doesn't affect WASM builds at all, and we can trivially remove it once a new `bitvec` is released. - The new runtimes are added to the CI to make sure their compilation doesn't break.
NOTE: We have recently made significant changes to our repository structure. In order to streamline our development process and foster better contributions, we have merged three separate repositories Cumulus, Substrate and Polkadot into this repository. Read more about the changes here.
Polkadot SDK
The Polkadot SDK repository provides all the resources needed to start building on the Polkadot network, a multi-chain blockchain platform that enables different blockchains to interoperate and share information in a secure and scalable way. The Polkadot SDK comprises three main pieces of software:
Polkadot
Implementation of a node for the https://polkadot.network in Rust, using the Substrate framework. This directory
currently contains runtimes for the Polkadot, Kusama, Westend, and Rococo networks. In the future, these will be
relocated to the runtimes repository.
Substrate
Substrate is the primary blockchain SDK used by developers to create the parachains that make up the Polkadot network. Additionally, it allows for the development of self-sovereign blockchains that operate completely independently of Polkadot.
Cumulus
Cumulus is a set of tools for writing Substrate-based Polkadot parachains.
Releases
Note
Our release process is still Work-In-Progress and may not yet reflect the aspired outline here.
The Polkadot-SDK has two release channels: stable and nightly. Production software is advised to only use stable.
nightly is meant for tinkerers to try out the latest features. The detailed release process is described in
RELEASE.md.
Stable
stable releases have a support duration of three months. In this period, the release will not have any breaking
changes. It will receive bug fixes, security fixes, performance fixes and new non-breaking features on a two week
cadence.
Nightly
nightly releases are released every night from the master branch, potentially with breaking changes. They have
pre-release version numbers in the format major.0.0-nightlyYYMMDD.
Upstream Dependencies
Below are the primary upstream dependencies utilized in this project:
Security
The security policy and procedures can be found in docs/contributor/SECURITY.md.
Contributing & Code of Conduct
Ensure you follow our contribution guidelines. In every interaction and contribution, this project adheres to the Contributor Covenant Code of Conduct.
Additional Resources
- For monitoring upcoming changes and current proposals related to the technical implementation of the Polkadot network,
visit the
Requests for Comment (RFC)repository. While it's maintained by the Polkadot Fellowship, the RFC process welcomes contributions from everyone.