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fix: reference-types error on nightly version #375

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@qalisander qalisander commented Oct 21, 2024

It seems that reference types from WASM are not supported by wasm-parser crate (rustwasm/wasm-bindgen#4211).
It makes us pin to the recent nightly toolchain version that works, and contribution experience gets quite convoluted.
Hopefully there is an option to disable reference-types with a flag: -C target-cpu=mvp for wasm32-unknown-unknown target.

Resolves #374

Single source of rust toolchain from rust-toolchain.toml added for ci pipelines (actions-rust-lang/setup-rust-toolchain@v1 gh action used for that).

Resolves #294

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qalisander commented Oct 21, 2024

Also I've noticed that nightly-2024-09-05 produces binary size smaller, than the version actual for today nightly-2024-10-20.
Let's stick to nightly-2024-09-05.

nightly-2024-10-20

Checking contract erc721-metadata-example
stripped custom section from user wasm to remove any sensitive data
contract size: 23.3 KB
wasm data fee: 0.000129 ETH

nightly-2024-09-05

Checking contract erc721-metadata-example
stripped custom section from user wasm to remove any sensitive data
contract size: 22.2 KB
wasm data fee: 0.000125 ETH

@qalisander qalisander marked this pull request as ready for review October 21, 2024 14:05
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@bidzyyys bidzyyys left a comment

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Good job @qalisander, would be great if you can handle also #294 in this PR.

# the size limit.
RUSTUP_TOOLCHAIN=${RUSTUP_TOOLCHAIN:-nightly}

cargo build --release --target wasm32-unknown-unknown -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort
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I know you didn't add this as part of this PR, but why do we need these flags?

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@qalisander qalisander Oct 21, 2024

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Those are nightly compiler optimization flags. As I remember these flags been recommended for wasm size optimization in stylus docs.
I haven't tried to experiment with nightly flags further, since wasm size is fine for us.

target: wasm32-unknown-unknown
components: rust-src
toolchain: nightly-2024-01-01
rustflags: ""
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@qalisander qalisander Oct 21, 2024

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Alas we should write rustflags: "" everywhere. Otherwise our optimization rust flags will be replaced by -D warnings. Strange behavior of this gh action tbh

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I like it, left small comments.

contracts/src/token/erc721/mod.rs Outdated Show resolved Hide resolved
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@bidzyyys bidzyyys linked an issue Oct 24, 2024 that may be closed by this pull request
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LGTM!

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ref: add rust-toolchain.toml
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