* runtime-interface: Implement `register_only` functions The runtime interface supports versioning of functions. Currently, if you add a new function it will be used by the runtime automatically. This results in requiring all nodes of a network to upgrade before the runtime is upgraded, otherwise they will fail to instantiate the new runtime because of missing host functions. This pr introduces `register_only` functions. This can be used when a new runtime interface function should be introduced, but the actual usage can be deferred. This means that nodes will have the host function for this, but the runtime will still use the old version of the function when being compiled for wasm. However, when a runtime is enacted that uses the new host function, the "old nodes" will already have the host function and will continue to work. * Update primitives/runtime-interface/src/lib.rs Co-authored-by: cheme <emericchevalier.pro@gmail.com> * Update primitives/runtime-interface/proc-macro/src/utils.rs Co-authored-by: cheme <emericchevalier.pro@gmail.com> * FMT Co-authored-by: cheme <emericchevalier.pro@gmail.com>
Substrate ·

Substrate is a next-generation framework for blockchain innovation 🚀.
Trying it out
Simply go to docs.substrate.io and follow the installation instructions. You can also try out one of the tutorials.
Contributions & Code of Conduct
Please follow the contributions guidelines as outlined in docs/CONTRIBUTING.adoc. In all communications and contributions, this project follows the Contributor Covenant Code of Conduct.
Security
The security policy and procedures can be found in docs/SECURITY.md.
License
- Substrate Primitives (
sp-*), Frame (frame-*) and the pallets (pallets-*), binaries (/bin) and all other utilities are licensed under Apache 2.0. - Substrate Client (
/client/*/sc-*) is licensed under GPL v3.0 with a classpath linking exception.
The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.
In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.
