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contracts: Replace cargo feature unstable-interface with config (#12787)

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* Replace cargo feature with config

* Update frame/contracts/proc-macro/src/lib.rs

Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>

Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>
This commit is contained in:
Alexander Theißen
2022-11-30 14:19:14 +00:00
committed by GitHub
parent ec064e5edf
commit edce3ead3b
10 changed files with 94 additions and 66 deletions
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substrate/frame/contracts/README.md
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@@ -142,18 +142,11 @@ this pallet contains the concept of an unstable interface. Akin to the rust nigh
it allows us to add new interfaces but mark them as unstable so that contract languages can
experiment with them and give feedback before we stabilize those.
In order to access interfaces marked as `#[unstable]` in `runtime.rs` one need to compile
this crate with the `unstable-interface` feature enabled. It should be obvious that any
live runtime should never be compiled with this feature: In addition to be subject to
change or removal those interfaces do not have proper weights associated with them and
are therefore considered unsafe.
The substrate runtime exposes this feature as `contracts-unstable-interface`. Example
commandline for running the substrate node with unstable contracts interfaces:
```bash
cargo run --release --features contracts-unstable-interface -- --dev
```
In order to access interfaces marked as `#[unstable]` in `runtime.rs` one need to set
`pallet_contracts::Config::UnsafeUnstableInterface` to `ConstU32<true>`. It should be obvious
that any production runtime should never be compiled with this feature: In addition to be
subject to change or removal those interfaces might not have proper weights associated with
them and are therefore considered unsafe.
New interfaces are generally added as unstable and might go through several iterations
before they are promoted to a stable interface.