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How to speed up the Rust compiler in September 2026

279 points · 171 comments · trickypr

  1. slowin · · focus · HN ↗
    I've moved from Rust to Go for most things because in the era of agents, being able to iterate quickly on a project is a huge advantage and Rust is way, way slower than Go for compilation. There are times when Rust is more appropriate, but for the vast majority of things Go is perfectly fine.
    1. echelon · · focus · HN ↗
      I nearly did this, but then I swapped to writing native desktop apps and egui - Rust is still worth it.

      I've stopped using Tauri and gone with 100% egui. It's cross platform and excellent, and if you give it design constraints it will look beautiful.

      Check out my 100% adobe clean room reimplementations:

      <a href="https:&#x2F;&#x2F;github.com&#x2F;storytold&#x2F;filmcraft" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;storytold&#x2F;filmcraft

      <a href="https:&#x2F;&#x2F;github.com&#x2F;storytold&#x2F;photocraft" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;storytold&#x2F;photocraft

      <a href="https:&#x2F;&#x2F;github.com&#x2F;storytold&#x2F;drawcraft" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;storytold&#x2F;drawcraft (going to rename this vectorcraft)

      The #1 thing for the Rust project to do is make Rust faster to compile.

      Rust is the agentic AI language. It just needs to lean in and go faster.

      1. pjmlp · · focus · HN ↗
        Machine code is the ultimate agentic AI language, we will eventually get there, we are in the middle of the transition to 5 GLs.
        1. echelon · · focus · HN ↗
          Humans need to understand the code.
          1. pjmlp · · focus · HN ↗
            It is right there in the 5 GL language, unless you want to convince us that all your PR come with the corresponding Assembly that the compiler generated, while doing all the compiler passes with PhD level knowledge from everyone that has worked in LLVM since 2003.
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