Pigweed Live Notes: 2023-08-14

[chadn...@google.com]

2023-08-14

Landed recently highlights (full changelog)

• Improvements to Rust support for pw_stream
• Bazel toolchain rules for LLVM
• Prototype VS Code extension
• You can try it now! pw ide vscode --install-extension
• But you probably want to hold off for a little while longer
• Several docs improvements, including rustdoc generation
• See pw_stream for an example
• Zephyr RFC for including Pigweed as a Zephyr module

Coming soon

• Faster docs builds – instantaneous for typical docs editing experiences
• Richer VS Code extension features – all pw_ide features exposed via UI elements rather than tasks
• SEED-0107 Comms 2.0 – last call! Get your comments in! CL, Discord thread.

Agenda

Modular toolchains in Bazel -

Armando Montanez

• Slides
• GN is great – it’s powerful, simple, and fast
• GN is not great – it’s not commonly used, it’s not very actively developed
• Bazel is great – it’s very well integrated with tech in the Google world, it’s very widely used and actively developed, and has a better modularity story (better than $dir_pigweed_…)
• We’re not dropping support for GN, but we are moving to supporting Bazel as the premier Pigweed build system
• Challenges with Bazel + Pigweed:
• Global project configuration
• pw_* wrappers
• Multiple ways to set up toolchains, and they aren’t inherently designed to be extensible
• Others have tried to solve this problem before: rules_cc_toolchain, CRT
• Check out the presentation for details on our solution proposal

Updates on Rust support in Pigweed -

Erik Gilling

• Tokenizer landing today-ish (CL)
• `rustdoc` docs now linked to modules that have them (example)
• Facade design prototyped (CL)

 

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