DTF:HN for May 3, 2026

Your Daily Tech Feed covering the top 10 stories on Hacker News for May 3, 2026. Featuring: A couple million lines of Haskell: Production engineering at Mercury, This Month in Ladybird – April 2026, Dav2d, Unverified Evaluations in Dusk's PLONK, Six Years Perfecting Maps on WatchOS, and more. Stories covered: 1. A couple million lines of Haskell: Production engineering at Mercury https://blog.haskell.org/a-couple-million-lines-of-haskell/ HN discussion: https://news.ycombinator.com/item?id=47991802 2. This Month in Ladybird – April 2026 https://ladybird.org/newsletter/2026-04-30/ HN discussion: https://news.ycombinator.com/item?id=47990318 3. Dav2d https://code.videolan.org/videolan/dav2d HN discussion: https://news.ycombinator.com/item?id=47988504 4. Unverified Evaluations in Dusk's PLONK https://osec.io/blog/2026-04-30-unverified-evaluations-dusk-plonk/ HN discussion: https://news.ycombinator.com/item?id=47966975 5. Six Years Perfecting Maps on WatchOS https://www.david-smith.org/blog/2026/04/29/maps-on-watchos/ HN discussion: https://news.ycombinator.com/item?id=47990606 6. Do_not_track https://donottrack.sh/ HN discussion: https://news.ycombinator.com/item?id=47988592 7. Group averages obscure how an individual's brain controls behavior: study https://med.stanford.edu/news/all-news/2026/04/brain-scans-individual-versus-group.html HN discussion: https://news.ycombinator.com/item?id=47969142 8. Specsmaxxing – On overcoming AI psychosis, and why I write specs in YAML https://acai.sh/blog/specsmaxxing HN discussion: https://news.ycombinator.com/item?id=47994012 9. Neanderthals ran 'fat factories' 125,000 years ago (2025) https://www.universiteitleiden.nl/en/news/2025/07/neanderthals-ran-fat-factories-125000-years-ago HN discussion: https://news.ycombinator.com/item?id=47990284 10. Windows quality update: Progress we've made since March https://blogs.windows.com/windows-insider/2026/05/01/windows-quality-update-progress-weve-made-since-march/ HN discussion: https://news.ycombinator.com/item?id=47980279