HN user

cube2222

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Director of R&D Engineering at https://spacelift.io

email: jakub.wit.martin at gmail dot com

work email: kubam at spacelift dot io

linkedin: https://www.linkedin.com/in/jakubmartin

github: https://github.com/cube2222

Author of OctoSQL: https://github.com/cube2222/octosql

Posts133
Comments1,494
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lucumr.pocoo.org 7mo ago

Skills vs. Dynamic MCP Loadouts

cube2222
14pts0
github.com 9mo ago

Show HN: Spacelift Intent MCP – Cloud Infra Provisioning for Your AI Agent

cube2222
8pts1
www.theverge.com 1y ago

Apple launches iPadOS 26 with a new look and better multitasking

cube2222
2pts0
docs.anthropic.com 1y ago

Claude Code GitHub Action

cube2222
1pts1
github.com 1y ago

Pg-Schema-Diff – Diffing Postgres Schemas and Generating SQL Migrations

cube2222
7pts0
kubamartin.com 1y ago

Jujutsu VCS: Introduction and patterns

cube2222
236pts124
thenewstack.io 1y ago

OpenTofu Turns One with OpenTofu 1.9.0

cube2222
8pts0
spacelift.io 1y ago

OpenTofu Day at KubeCon NA Salt Lake City: The Recap

cube2222
2pts0
twitter.com 1y ago

Mechazilla has caught the Super Heavy booster

cube2222
61pts1
opentofu.org 1y ago

Building the OpenTofu Registry

cube2222
1pts0
kagi.com 1y ago

Preview Release of the New Kagi Assistant

cube2222
1pts6
karpathy.ai 1y ago

Neural Networks: Zero to Hero

cube2222
4pts0
opentofu.org 2y ago

OpenTofu 1.7.0 is out with State Encryption, Dynamic Provider-defined Functions

cube2222
118pts21
blog.rust-lang.org 2y ago

2023 Annual Rust Survey Results

cube2222
13pts2
spacelift.io 2y ago

Spacelift WorkerPool Kubernetes Operator: Technical Overview

cube2222
1pts0
github.com 2y ago

Show HN: OpenTofu Is Now Stable

cube2222
30pts1
events.linuxfoundation.org 2y ago

KubeCon OpenTofu Day

cube2222
2pts0
www.youtube.com 2y ago

Mojo – System Programming Language for Heterogenous Computing (LLVM Dev Mtg) [video]

cube2222
4pts1
www.youtube.com 2y ago

Swift as C++ Successor in FoundationDB [video]

cube2222
79pts23
www.openmymind.net 2y ago

Zig Interfaces

cube2222
10pts0
opentofu.org 2y ago

Why should I care about OpenTofu?

cube2222
3pts0
github.com 2y ago

OpenTF repository is now public

cube2222
510pts177
www.harness.io 2y ago

Harness Joins OpenTF Initiative

cube2222
16pts0
opentf.org 2y ago

OpenTF announces fork of Terraform

cube2222
1711pts486
spacelift.io 2y ago

Spacelift’s Latest Statement on HashiCorp’s BSL Adoption

cube2222
10pts0
spacelift.io 2y ago

What HashiCorp’s license change means for our customers

cube2222
230pts262
github.com 3y ago

Go-Plugin – Go Plugin System over WebAssembly

cube2222
4pts0
create.t3.gg 3y ago

T3: Best Way to Start a Full-Stack, Typesafe Next.js App

cube2222
2pts1
twitter.com 3y ago

OpenAI Rolls Out Plugins and Web Browsing to All ChatGPT Plus Users

cube2222
20pts11
rodrigodd.github.io 3y ago

Brainfuck – A Cranelift JIT Compiler

cube2222
2pts0

I think the reason for this is that if you're targeting folks for whom Europe-sovereignty resonates as an important factor, those will also care about sovereignty and self-sufficiency in general, and thus just skip your SaaS and go right for (semi) self-hosting.

While for the other side where the sovereignty is not an important factor, it's product quality that matters.

You can absolutely make a European startup that sells B2B SaaS, successfully, it just has to be better than the competition, and being European will not be enough.

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Relatedly, I think it's worth noting that Anthropic models have consistently been top-scoring in BullshitBench[0], in a league of their own, really.

Not affiliated with the bench in any way, but I think it surfaces important differences between the behavior of the models from different labs.

TLDR: The benchmark is measuring pushback in response to nonsensical requests and questions, as opposed to going with it and hallucinating a nonsensical answer.

[0] https://petergpt.github.io/bullshit-benchmark/viewer/index.v...

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Love the writing style!

Nothing beats an organic, pasture-raised, hand-written spec.

Hah, I strongly empathize with the wording. I’ve been starting my design docs for fellow humans with “100% hand-written, organic content”, I might steal a part of yours.

Overall, cool idea. I don’t see myself using your SaaS, but the approach of tagging the requirements and constraints to make them easier to find sounds good.

One project you didn’t mention which I think is also, I think, a cool perspective on this is codespeak.dev , but I haven’t given it a go yet.

All in all, I feel like maintaining specs, and having agents translate spec diffs into code diffs is a promising area for the future. Good thing I enjoy writing!

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

GPT-5.5 3 months ago

Small tip, at least for now you can switch back to Opus 4.6, both in the ui and in Claude Code.

I’ve never been one to complain about new models, and also didn’t experience most of the issues folks were citing about Claude Code over the last couple months. I’ve been using it since release, happy with almost each new update.

Until Opus 4.7 - this is the first time I rolled back to a previous model.

Personality-wise it’s the worst of AI, “it’s not x, it’s y”, strong short sentences, in general a bulshitty vibe, also gaslighting me that it fixed something even though it didn’t actually check.

I’m not sure what’s up, maybe it’s tuned for harnesses like Claude Design (which is great btw) where there’s an independent judge to check it, but for now, Opus 4.6 it is.

Claude Opus 4.7 3 months ago

I would risk a guess that people have a wrong intuition about the long-context pricing and are complaining because of that.

Yeah, the per-token price stays the same, even with large context. But that still means that you're spending 4x more cache-read tokens in a 400k context conversation, on each turn, than you would be in a 100k context conversation.

Hey! I believe I've been posting this (not verbatim, it's been evolving) almost every month since 2020 - we've been actively hiring since, and we are still hiring.

Claude Opus 4.7 3 months ago

I've been using it with `/effort max` all the time, and it's been working better than ever.

I think here's part of the problem, it's hard to measure this, and you also don't know in which AB test cohorts you may currently be and how they are affecting results.

Claude Opus 4.7 3 months ago

Seems like it's not in Claude Code natively yet, but you can do an explicit `/model claude-opus-4-7` and it works.

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Honestly, for now they seem to be buying companies built around Open Source projects which otherwise didn't really have a good story to pay for their development long-term anyway. And it seems like the primary reason is just expertise and tooling for building their CLI tools.

As long as they keep the original projects maintained and those aren't just acqui-hires, I think this is almost as good as we can hope for.

(thinking mainly about Bun here as the other one)

A reasonably cool part about this approach (duplicating the commits, though I suppose you could just add your own bookmark on the existing commit, too) is that you can easily diff the current pr state with what you last reviewed, even across rebases, squashes, fixups, etc. Will have to give that a go.

Unfortunately GitHub still doesn't make that easy, and branch `push --force`'s make it really hard to see what changed, would be amazing if they ever fixed that.

In general, I think with the rise of agentic coding, and more review work, I hope we see some innovation in the "code review tooling" space. Not AI reviewers (that's useful too but already works well enough)! I want tools that help the human review code faster, more effectively, and in a more pleasant way.

Of course can't end the comment without the obligatory "jj is great, big recommend, am not affiliated, check out the blog post I wrote a year ago for getting started with it[0]", ha! I'm still very happy with it, no going back.

[0] https://kubamartin.com/posts/introduction-to-the-jujutsu-vcs...

This is actually... pretty cool?

Definitely won't use it for prod ofc but may try it out for a side-project.

It seems that this is more or less:

  - instead of modules, write specs for your modules
  - on the first go it generates the code (which you review)
  - later, diffs in the spec are translated into diffs in the code (the code is *not* fully regenerated)
this actually sounds pretty usable, esp. if someone likes writing. And wherever you want to dive deep, you can delve down into the code and do "microoptimizations" by rolling something on your own (with what seems to be called here "mixed projects").

That said, not sure if I need a separate tool for this, tbh. Instead of just having markdown files and telling cause to see the md diff and adjust the code accordingly.

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Claude Sonnet 4.6 5 months ago

This seems to agree with my own previous tests of Sonnet vs Opus (not on this version). If I give them a task with a large list of constraints ("do this, don't do this, make sure of this"), like 20-40, Sonnet will forget half of it, while Opus correctly applies all directives.

My intuition is this is just related to model size / its "working memory", and will likely neither be fixed by training Sonnet with Opus nor by steadily optimizing its agentic capabilities.

Claude Sonnet 4.6 5 months ago

Attention is, at its core, quadratic wrt context length. So I'd believe that to be the case, yeah.

Claude Sonnet 4.6 5 months ago

So tldr it seems like it's

- a reasonable improvement over sonnet 4.5, esp. with agentic tool use

- generally worse than opus 4.6

Probably not worth it for coding, but a win for anybody building agentic ai assistants of any sort with Sonnet.

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Just to reiterate, both of those (hemp hearts and flaxseed) only contain ALA, while what you're generally looking for is EPA and DHA. TFA also explicitly mentions it's only talking about EPA.

This is not to say that they're unhealthy of course.

EDIT: see the sibling comment by code_biologist, it's much more comprehensive than what I've written.

I'm not an expert, but I've done a bunch of reading on this previously, and also skimmed the article which also mentions some parts of this.

First, when taking omega 3 supplements, you generally care about increasing the ratio of omega 3 to omega 6. Hemp hearts have much more omega 6 than omega 3, so they're not very effective for improving the ratio.

Second, hemp hearts contain ALA, while what you generally want to improve is EPA and DHA (this is also covered in TFA). The body can convert ALA to EPA and DHA, but it's not efficient.

So all in all, if Omega 3 for the article's stated benefits is what you want, this is not the way. I recommend looking into eating more fish, or if you want a vegan route, algae-based supplements. [0] is a decent source from the NIH about foods and their Omega 3 content, split by ALA/EPA/DHA.

[0] https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthPro...

How I estimate work 6 months ago

I think the main problem in estimating projects is unknown unknowns.

I find that the best approach to solving that is taking a “tracer-bullet” approach. You make an initial end-to-end PoC that explores all the tricky bits of your project.

Making estimates then becomes quite a bit more tractable (though still has its limits and uncertainty, of course). Conversations about where to cut scope will also be easier.

Yeah, I have written multiple almost completely-vibecoded linters since Claude Code came out, and they provide very high value.

It’s kind of a best case scenario use-case - linters are generally small and easy to test.

It’s also worth noting that linters now effectively have automagical autofix - just run an agent with “fix the lints”. Again, one of the best case scenarios, with a very tight feedback loop for the agent, sparing you a large amount of boring work.

OLED, Not for Me 6 months ago

I bought a w-oled monitor for office work and gaming, very happy with my oled tv. I returned it after a couple days.

I got unbearable eye strain from it, even though I use rather large fonts, and the ppd was the same as with my previous IPS. Yes, the “more fuzzy” text was very much noticeable too.

Maybe it varies by person, maybe it’s influenced by things like astigmatism, but I totally see where the author is coming from, and I too am waiting for the new OLED panels to see if there’s an improvement.

I’ve gone through this series of videos earlier this year.

In the past I’ve gone through many “educational resources” about deep neural networks - books, coursera courses (yeah, that one), a university class, the fastai course - but I don’t work with them at all in my day to day.

This series of videos was by far the best, most “intuition building”, highest signal-to-noise ratio, and least “annoying” content to get through. Could of course be that his way of teaching just clicks with me, but in general - very strong recommend. It’s the primary resource I now recommend when someone wants to get into lower level details of DNNs.