Add wasm-opt-for-rust proposal

[brson]

Project Abstract

This project makes the wasm-opt tool more accessible to Rust programmers. wasm-opt is a WebAssembly optimizer and is required by most software toolchains that produce WebAssembly binaries.

This project is to package wasm-opt as a cargo crate, so that it can be installed by typing

cargo install wasm-opt

Additionally, it will provide a Rust API so that toolchain developers may, if they desire, call wasm-opt programmatically, so that their users are not required to manually install the tool.

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• Level 2: Up to $30,000, 3 approvals
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[CLAassistant]

All committers have signed the CLA.

[brson]

cc @cmichi @Robbepop @kripken a proposal to create Rust wasm-opt bindings.

[cmichi]

This application is great! It'll heavily improve the developer experience with cargo-contract, as well as benefit the broader Wasm ecosystem.

PS: A nit ‒ the project name is "ink!", the backstory is that we started out with a "normal" macro and wanted a tip of the hat to that, as well as maximizing the amount of "Dots" in our project name, as another tip of the hat to Polkadot :-).

[Noc2]

Thanks a lot for the application! I’m happy to approve it and mark it as ready for review. If you have any questions feel free to reach out to [email protected] We are also flexible to amend the grant application at any time, if it makes sense to change it (additional work, certain problems etc.)

[laboon]

Does this imply that milestone 2 will have the complete API? Do you know which parts might be incomplete or why??

[brson]

It does imply that M2 will have a complete API, and I have updated the M2 text to clarify.

For the most part wasm-opt uses well defined C++ APIs within binaryen, and these will be easy to expose in Rust, and we will probably get them done quickly for M1.

Some API matters that could be punted to M2 include:

• Features provided by the wasm-opt binary that aren't provided by binaryen APIs. There are a few, particularly related to fuzzing.
• There are also some wasm-opt flags that specifically affect console output, that probably don't make sense for a programmatic API, but may want to be accounted for in some way. For example there are flags for printing various things to the console - an API probably wouldn't just print things to the console, but may provide access to the appropriate info such that the caller can do that printing on their own.
• For ease of integration into existing tools it may be desirable to let API callers pass the textual command-line options they already use directly to the API. This may especially be true if any tools allow command-line options to be passed-through to wasm-opt. This would likely require a custom-written Rust parser for the wasm-opt command line options.

If you want I can reflect these specifics in the text.

[takahser]

@brson thanks for submitting this grant application. I think this is something that would make ink! development more convenient, hence adding plenty of value to the community. I'm happy to go ahead with it. 👍

[ashlink11]

Thank you for applying to build a useful/core crate in the rust/wasm/cargo/ink! ecosystem. I'm glad your long-term plan is to apply for maintenance grants to maintain it. I'm looking forward to the article part of M2 to understand more about your work and how Layer 0 works in more detail.

[brson]

I have fixed the capitalization and punctuation for the name ink!, accepted suggestions, and clarified the API deliverables. Thanks for the reviews and enthusiasm.

[brson]

Let me know if I should squash the commits.

[Noc2]

Thanks a lot for the update. You don’t need to squash the commits.

[Noc2]

Btw. @brson could you sign the latest version of our terms & conditions. See the CLAassistant bot.

[alxs]

This seems very useful, happy to support it! I would love to see more grants for low-level tooling like this.

[takahser]

Re-Approving

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[brson]

Btw. @brson could you sign the latest version of our terms & conditions. See the CLAassistant bot.

I have re-signed the CLA as requested.

[brson]

Thanks for the support all!