Hacker News Highlights

This is a recap of the top 10 posts on Hacker News on Jul 27, 2025.

Rust running on every GPU
https://rust-gpu.github.io/blog/2025/07/25/rust-on-every-gpu/
https://news.ycombinator.com/item?id=44692876

How we rooted Copilot
https://research.eye.security/how-we-rooted-copilot/
https://news.ycombinator.com/item?id=44695098

Purple Earth hypothesis
https://en.wikipedia.org/wiki/Purple_Earth_hypothesis
https://news.ycombinator.com/item?id=44665644

The natural diamond industry is getting rocked. Thank the lab-grown variety
https://www.cbc.ca/news/business/lab-grown-diamonds-1.7592336
https://news.ycombinator.com/item?id=44693570

What went wrong for Yahoo
https://dfarq.homeip.net/what-went-wrong-for-yahoo/
https://news.ycombinator.com/item?id=44696033

When We Get Komooted
https://bikepacking.com/plog/when-we-get-komooted/
https://news.ycombinator.com/item?id=44699421

Resizable structs in Zig
https://tristanpemble.com/resizable-structs-in-zig/
https://news.ycombinator.com/item?id=44697131

Shallow water is dangerous too
https://www.jefftk.com/p/shallow-water-is-dangerous-too
https://news.ycombinator.com/item?id=44664176

Getting decent error reports in Bash when you're using 'set -e'
https://utcc.utoronto.ca/~cks/space/blog/programming/BashGoodSetEReports
https://news.ycombinator.com/item?id=44666984

Chemical process produces critical battery metals with no waste
https://spectrum.ieee.org/nmc-battery-aspiring-materials
https://news.ycombinator.com/item?id=44698928