Behind the scenes of Rust Alex Crichton Tooling Infrastructure - - PowerPoint PPT Presentation

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Behind the scenes of Rust Alex Crichton Tooling Infrastructure - - PowerPoint PPT Presentation

Feb 16, 2024 732 likes •1.28k views

Behind the scenes of Rust Alex Crichton Tooling Infrastructure Community Were not in 1970 Developers have high expectations for tooling support Developers also expect a lot of tools Tools alone can often spawn entire ecosystems

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Behind the scenes of Rust

Alex Crichton

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Tooling Infrastructure Community

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We’re not in 1970

  • Developers have high expectations for tooling support
  • Developers also expect a lot of tools
  • Tools alone can often spawn entire ecosystems
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Tools in Rust

  • cargo
  • rustdoc
  • rustup
  • rustc
  • gdb
  • RLS
  • rustfmt
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Why Cargo?

Time Crates

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Why Cargo?

  • Sharing code is critical for a young language
  • A package manager from day one is hugely beneficial
  • Despite blocking 1.0 on Cargo, Cargo accelerated

stabilization of libstd through aggressive pruning

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How has Cargo helped?

  • Small standard library far easier to port and maintain
  • “Dependency hell” is almost a thing of the past
  • Language features like custom derive far easier with

Cargo

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What else was missing?

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Enter the LSP

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Enter the RLS

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RLS requirements

  • Needs to support common IDE queries like
  • go to definition
  • find all uses
  • renaming variables
  • Can’t reimplement all of rustc
  • Responses must be fast

“You must use rustc” “You must not use rustc”

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Getting rustc fast

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Getting rustc fast

Where’s the definition of this type?

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Polishing the RLS

rustup component add rls-preview

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Tools in Rust

  • cargo
  • rustdoc
  • rustup
  • rustc
  • gdb
  • RLS
  • rustfmt
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Tooling Infrastructure Community

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We’re still not in 1970

  • Developers expect their tools to not break
  • Developers expect low friction when managing tools
  • Vast majority of users will always be new ones
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Infrastructure of Rust

  • Continuous Integration
  • {www,doc,play}.rust-lang.org
  • crates.io
  • Rapid release cycle
  • “Dealing with GitHub”
  • AWS services, CDNs, storage, etc
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  • Managed via PRs on GitHub
  • Continuously deployed
  • Delivered via CloudFront CDN
  • Fun with DNS/SSL/…
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rustup update

  • Also delivered via CDN
  • Delivers over 50 targets to compile to
  • Crazy platform-specific logic in rustup itself
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cargo build

  • crates.io crates delivered via CDN
  • crates.io itself written in Rust
  • Deployed via Heroku
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You’ve found a bug!

  • All rustc/Rust language development happens on GitHub
  • GitHub is what most know and love, makes it easiest for

new contributors

  • Let’s send a PR…
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bors: Mandatory homage

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The Last of the Masters

The title character, Bors, a 200-year-old "government integration robot"—and the last in existence—awakens after a routine maintenance check to learn that his motor system is in a state of decline. An artificially intelligent machine who displays a degree of emotion and even psychological complexity, he is informed by Fowler, a personal mechanic, that his body has begun to break down due to age.

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bors never sleeps

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bors in action

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bors in action

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bors in action

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bors in action

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Release trains

  • Nightly, beta, stable channels
  • Automatic nightlies each night
  • Stable/beta updated once every 6 weeks
  • Stable/beta receive bug fixes with “backports”
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Infrastructure of Rust

  • Continuous Integration
  • {www,doc,play}.rust-lang.org
  • crates.io
  • Rapid release cycle
  • “Dealing with GitHub”
  • AWS services, CDNs, storage, etc
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Tooling Infrastructure Community

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We get it, it’s not 1970

  • Development does not happen in isolation any more
  • Everyone’s got thoughts (often great ones!)
  • Early stage projects live and die by their communities
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Rust’s Community

  • Governance of Rust itself
  • RFC process
  • Internals/users forum, IRC
  • Community team
  • Conferences
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To int or not to int?

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Reducing entropy

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