This is a recap of the top 10 posts on Hacker News on Apr 21, 2026.
Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights
(00:20) - John Ternus to become Apple CEO(01:46) - All phones sold in the EU to have replaceable batteries from 2027(03:15) - Qwen3.6-Max-Preview: Smarter, Sharper, Still Evolving(04:26) - ggsql: A Grammar of Graphics for SQL(05:38) - Kimi vendor verifier – verify accuracy of inference providers(06:51) - WebUSB Extension for Firefox(08:17) - Brussels launched an age checking app. Hackers took 2 minutes to break it(09:26) - Jujutsu megamerges for fun and profit(10:44) - Quantum Computers Are Not a Threat to 128-Bit Symmetric Keys(12:03) - Anthropic says OpenClaw-style Claude CLI usage is allowed again(13:19) - OutroJohn Ternus to become Apple CEO
https://www.apple.com/newsroom/2026/04/tim-cook-to-become-apple-executive-chairman-john-ternus-to-become-apple-ceo/
https://news.ycombinator.com/item?id=47840219
All phones sold in the EU to have replaceable batteries from 2027
https://www.theolivepress.es/spain-news/2026/04/20/eu-to-force-replaceable-batteries-in-phones-and-tablets-from-2027/
https://news.ycombinator.com/item?id=47834195
Qwen3.6-Max-Preview: Smarter, Sharper, Still Evolving
https://qwen.ai/blog?id=qwen3.6-max-preview
https://news.ycombinator.com/item?id=47834565
ggsql: A Grammar of Graphics for SQL
https://opensource.posit.co/blog/2026-04-20_ggsql_alpha_release/
https://news.ycombinator.com/item?id=47833558
Kimi vendor verifier – verify accuracy of inference providers
https://www.kimi.com/blog/kimi-vendor-verifier
https://news.ycombinator.com/item?id=47838703
WebUSB Extension for Firefox
https://github.com/ArcaneNibble/awawausb
https://news.ycombinator.com/item?id=47832969
Brussels launched an age checking app. Hackers took 2 minutes to break it
https://www.politico.eu/article/eu-brussels-launched-age-checking-app-hackers-say-took-them-2-minutes-break-it/
https://news.ycombinator.com/item?id=47831742
Jujutsu megamerges for fun and profit
https://isaaccorbrey.com/notes/jujutsu-megamerges-for-fun-and-profit
https://news.ycombinator.com/item?id=47841129
Quantum Computers Are Not a Threat to 128-Bit Symmetric Keys
https://words.filippo.io/128-bits/
https://news.ycombinator.com/item?id=47836784
Anthropic says OpenClaw-style Claude CLI usage is allowed again
https://docs.openclaw.ai/providers/anthropic
https://news.ycombinator.com/item?id=47844269