Ask HN: What are you working on? (September 2025)

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I treat it more like a homework exercise for a Coursera course but I like the result.

Thanks! That's a great question.

First off, I'm a huge fan of Kysely and it's a massive source of inspiration for Typegres.

You've nailed the two big differences:

* Architected for Business Logic: The primary innovation is the class-based model. This is all about co-locating your business logic (like calculated fields and relations) directly with your data model. The cool part is that these methods aren't just for SELECT; they're composable SQL expressions you can use anywhere: in a WHERE, an ORDER BY, etc. The goal is to create a single, type-safe source of truth for your logic that compiles directly to SQL.

* PostgreSQL-Native: The other fundamental difference is the focus on going deep on a single database rather than being database-agnostic. That massive list of functions you saw is a core feature, designed to provide exhaustive, type-safe, and autocomplete-friendly coverage for the entire PostgreSQL feature set. The philosophy is to stop forcing developers to reinvent database logic in their application code.

Philosophically, it's a shift from composing type-safe SQL strings (like Kysely, which is brilliant for its WYSIWYG approach) to composing SQL expressions as if they were first-class TypeScript objects.

When I was 14 I would have wanted to "shred at 220bpm" but today I wouldn't get my wallet out for that. What I really would pay for is help getting into the pocket.

Anyone who can read a guitar tab can play the notes of "Superstition" by Stevie Wonder. But simply playing the notes against a metronome sounds mechanical -- the song only comes to life when you get the timings right (both the note attack and decay have to be timed for a "swing.") A good swing will practically force your audience to start dancing to your music -- it's magical! But it's very difficult to learn because regular metronome practice won't achieve it.

If you're measuring "rush and drag" against a straight metronome, could you also measure against a swung time, perhaps against timings extracted from in-the-pocket songs we know and love?

A few things!

I want to bring their bikepacking adventures alive in a story format. Cycling trips are often not Monday to Sunday. They might be a few weeks! Everything is geared towards performance. This misses the mark a little bit. I made this app to stitch a trip together. It also has a comparison engine which asks questions like - how many doughnuts? - to translate the trip into things everyone will understand.

https://probe.bike

Turns out HPC GPUs and systems are realllllly hard to find reliabile information about. I've built another project which aims to make this easier. Compare HPC GPUs, Power et al in a single page. Working on a calculator to determine how many FLOPS or GW your DC can do. Executives loveeee this!

https://flopper.io

Got some other things in the pipeline but hopefully tell you more about them in next monnth's threads.

Not sure you need psychology to figure it out: the notes may contain passwords to your accounts, confessions, and other things you're not comfortable sharing when you're alive.