Hacker News: jeandrek

New comment by jeandrek in "RavynOS: Pre-alpha open-source OS based on Darwin, FreeBSD, Apple open-source"

jeandrek — Mon, 31 Aug 2026 23:37:02 +0000

Here's macOS 26.5's XNU: https://github.com/apple-oss-distributions/xnu/tree/ac9718fb... Could just be what the devs have available, if they're really already going to the trouble to target RPi?

New comment by jeandrek in "RavynOS: Pre-alpha open-source OS based on Darwin, FreeBSD, Apple open-source"

jeandrek — Mon, 31 Aug 2026 23:28:22 +0000

It seems so weird that the M series are really SOCs and not just CPUs. I also don't really want a home computer to have coprocessors just for machine learning...

At least they always allow installing your own arbitrary OS.

New comment by jeandrek in "RavynOS: Pre-alpha open-source OS based on Darwin, FreeBSD, Apple open-source"

jeandrek — Mon, 31 Aug 2026 22:29:03 +0000

Seems at least one of the same developers works on both PureDarwin and ravynOS: https://www.puredarwin.org/news/The-Road-to-20-5-0.html (This is the first time I've heard of the latter.)

New comment by jeandrek in "Chicken Scheme 6.0"

jeandrek — Wed, 12 Aug 2026 10:49:07 +0000

By the current lexical environment I meant the lexical environment at some place in the code (not just the top-level one, which user-initial-environment gives, though it's optional). I'm not attempting to make a case for anything; but without that RnRS' eval doesn't grant more expressivity than just tacking on an interpreter to every program, which you could also just do yourself. (It also doesn't complicate the implementation; variable names don't need to be preserved after compiling.) I.e. it makes sense to say standard Scheme has been less "eval-friendly," even if there were good reasons or one doesn't care.

New comment by jeandrek in "Chicken Scheme 6.0"

jeandrek — Wed, 12 Aug 2026 10:10:56 +0000

Common Lisp reader macros hook into the reader itself as it's parsing S-exps and meets some character combination: http://www.ai.mit.edu/projects/iiip/doc/CommonLISP/HyperSpec... Define-syntax is for making special forms (i.e. normal macros).

Not that I know why eval should be paired with reader macros.

New comment by jeandrek in "Chicken Scheme 6.0"

jeandrek — Wed, 12 Aug 2026 01:53:41 +0000

The less-eval-friendly thing is R5RS only requires two possible "environment specifiers" (2nd arg to eval), returned by SCHEME-REPORT-ENVIRONMENT and NULL-ENVIRONMENT, with no special form or procedure to get the current lexical environment; and R4RS (I just checked) does not specify eval. There's pretty much no manipulation of environments in the standard; the best is something like

  ((eval `(lambda (foo) ,exp) (scheme-report-environment 5))
   foo)

(can't really think of applications for getting the current environment right now except for pseudo-macro stuff)

New comment by jeandrek in "Chicken Scheme 6.0"

jeandrek — Wed, 12 Aug 2026 01:40:25 +0000

It does not. https://conservatory.scheme.org/schemers/Documents/Standards... Particular implementations could.

New comment by jeandrek in "Chicken Scheme 6.0"

jeandrek — Tue, 11 Aug 2026 11:15:10 +0000

I've never really heard of installing SRFIs (could be my ignorance); do you mean importing them? Or is installing SRFI implementations as their own packages really common? (Haven't really tried R7.)

The anti-R6/R7 folks (or what I've heard) won't see a problem so long as you can use CL to build fancy serious software, which lets Scheme stay small and simple for education. (Of course ideally you'd be able to do any SICP exercise on a Scheme implementation out of the box, though.)

New comment by jeandrek in "Physical disc production ending in Jan 2028 for new games on PlayStation"

jeandrek — Thu, 02 Jul 2026 05:49:11 +0000

They're often cheaper and not everything is on Blu-ray. If Blu-ray was going really strong and overtook DVDs, I'd be happy about it. I don't really think DVDs are "simpler to operate" except for the fact that you only need cheaper equipment (though one can imagine someone with ingrained habits believing them to be "complicated").

New comment by jeandrek in "Physical disc production ending in Jan 2028 for new games on PlayStation"

jeandrek — Thu, 02 Jul 2026 01:10:51 +0000

Supposedly you can still redownload your PSN purchases directly on the PSP itself (log in with a "Device Setup Password")? Unless like me you have a PSP Street, which sadly has no Wi-Fi.

New comment by jeandrek in "PlayStation Store for PS3 and PS Vita closing in 2026-2027"

jeandrek — Thu, 02 Jul 2026 00:54:10 +0000

This is the status quo for PSP. Don't know whether it'll call PSN servers (some servers will of course need to exist for downloading in the first place), but otherwise it'll just be like using your PS3 offline, right?

The PS3 lets you back up content to a USB flash drive, and you can copy it to your PC from there (see also RPCS3).

New comment by jeandrek in "Physical disc production ending in Jan 2028 for new games on PlayStation"

jeandrek — Thu, 02 Jul 2026 00:16:13 +0000

I'm Gen Z and I buy DVDs (though mostly second hand). You're probably right on the whole, though I've only observed the opposite.

New comment by jeandrek in "Physical disc production ending in Jan 2028 for new games on PlayStation"

jeandrek — Wed, 01 Jul 2026 23:53:27 +0000

In NZ 4K Blu-rays are too expensive, at least by my standard (there's about one store chain, JB Hi-Fi). Never seen a single one at a second hand shop. (Though I guess a used bin is a place for 2nd hand goods at an otherwise first-hand shop? Which we don't really have.)

New comment by jeandrek in "Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28"

jeandrek — Fri, 19 Jun 2026 11:43:09 +0000

Anyone know why the article's 4th picture is about the Jobs obituary gaffe? (It's not just for me, right?)

New comment by jeandrek in "Emacs appearances in pop culture"

jeandrek — Fri, 12 Jun 2026 02:44:43 +0000

Nice. I've never seen any of these things except for Tron: Legacy; and I either didn't notice it was Emacs or immediately forgot if I did (you could also sorta take it to be tmux or something if you don't look closely enough to see the *eshell*). But this is the sort of thing I would generally never let my acquaintances hear the end of if I spotted :)