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crawshaw

Re:Nobel Prize in Physics goes to Francis Halzen on Tuesday October 06, 2026 @02:07PM (#49981968)
I love Ice Cube, as it is great engineering contributing significantly to science. It is also the perfect way to describe the concept of a great “hack” to people outside the field.
Re:Big Tech ruined the cloud, so we're renaming ours on Friday October 02, 2026 @12:17PM (#49935257)
From a pure branding perspective, I think there is something to this. We are building a new "cloud" at exe.dev (everything from racking machines, building a global load balancer, and new APIs onto VMs) and yet it is very hard to bring ourselves to use the word cloud. We don't really want to be associated with the experience or mindset that "cloud" implies. I certainly wish there were a better way to describe this.
Re:Ask HN: Who is hiring? (October 2026) on Thursday October 01, 2026 @08:06PM (#49928452)
exe.dev | onsite | SF Bay Area | Full-time designer

Come own and build a brand at a Series A startup.

Re:Formalizing Fermat's Last Theorem on Friday September 04, 2026 @04:36PM (#49569918)
More (strong) evidence that agents make formal methods far more useful. The cost of creating that Lean proof has dropped dramatically.

Hopefully this helps mathematicians. It seems very clear to me that it will help software engineers apply formal methods to more of our software.

Re:Ask HN: Who is hiring? (September 2026) on Tuesday September 01, 2026 @03:11PM (#49526601)
exe.dev | full time member of technical staff | sf bay area only competitive salary, meaningful early equity, 2 days a week in the downtown sf office

come build a cloud. we are doing everything from custom hardware to custom ssh servers to our own global load balancer. very senior small high-trust team looking for someone we can rely on to get done whatever is most important in the stack for the business. some days that means patch the vmm. other days it means figure out passkey quirks. more about what we are building here: https://crawshaw.io/blog/building-a-cloud email me at [email protected].

Re:Ask HN: Who is hiring? (August 2026) on Monday August 03, 2026 @08:39PM (#49163122)
I would also love to hire an engineer with a background in design who wants to build UIs that are both functional and beautiful. You would get to own UI.
Re:Ask HN: Who is hiring? (August 2026) on Monday August 03, 2026 @08:36PM (#49163107)
exe.dev | SF Bay Area | full time | $200k+, meaningful equity

Come build a new cloud. The entire engineering team has been in the industry 20+ years. Lots of hard problems. The freedom and responsibility to do what you think matters, push it to prod and deal with support when it breaks.

Re:Devtools must be open source on Monday August 03, 2026 @08:27PM (#49163052)
Author here. FWIW, I do this with my Shelley modifications. It works.
Re:Devtools must be open source on Monday August 03, 2026 @05:16PM (#49161550)
Hi, author here. FWIW, the only people I coordinated with are my colleagues at exe.dev. Philip wrote a blog post a week ago on the topic too: https://blog.exe.dev/customizing-shelley. In retrospect, I should have sent drafts of this to other people I know thinking about new dev tooling to get their feedback! A bit more private discussion could have let me polish this more.

We are all busy discovering the shape of new tools and norms as our profession has been overturned by LLMs. It is not too surprising similar ideas are floating about. Though I have not seen anything that captured how I now go about personalizing programs, and how I expect it to change our industry. So I wrote this.

Re:Devtools must be open source on Monday August 03, 2026 @05:12PM (#49161501)
Hi, author here. The entire second paragraph of my blog post is dedicated to the question you asked. There is really nothing more I can add.
Re:Devtools must be open source on Monday August 03, 2026 @12:03PM (#49157584)
(Author here.) Open models are really quite good now. I still use oai as my daily but I have been very impressed by qwen/glm/k3/etc when I try them. They are clearly my future.
Re:Devtools must be open source on Monday August 03, 2026 @11:21AM (#49156982)
(Author here.)

FWIW the first version of meat was based on anthropic models, I switched to Oai models because they are faster and just as good right now. This is an astonishing thing to say, but the switch was a single shot prompt using a frontier model. I’m happy to add some selector there, but that is also the point of this article: do you really need me to make it configurable when you can switch the tool over to Anthropic with a single prompt? It’s a strange new world we live in.

On the website: you’re right. I have some side-by-side diff examples I want to turn into a website. I am just short on hours in the day. My real goal is to make the tool compelling enough that I can convince my colleagues that we should build it into Shelley. :)

Interestingly, it's the .xyz on our VM domain that causes problems. It's apparently far more of a problematic gTLD than I realized. E.g. it appears Southwest Airlines blocks the entire thing, as do some enterprise networks are working with.

(We have a fix for this coming in a few weeks.)

(exe.dev co-founder here) The platform is designed make it easy for you to share if you like, but we are not typically in the business of pointing directly at products users make. Maybe we should change that! It would be fun to have a "best of exe.dev" on our site.
I’m just going to keep building. :)
If you have a good local VM flow that’s great. I couldn’t make it work for me. I ended up needing it to run when my laptop was shut, both as an agent and the servers I am building.

It’s a real tension, working with a remote dev env has never been my first choice. But agents seem to tip the balance enough in favor of remote that I have switched.

I think it’s worth trying. There’s a lot of value in having the agent in the box. You can give it root so it can do something like tcpdump unsupervised. And if you happen to build a new server, you can keep it serving indefinitely. That’s the whole motivation behind exe.dev.
For those looking to run agents: the short lifecycle of the typical “sandbox” seems surprisingly limiting to me. I have no actual workflow where I want one of these products. Sometimes a VM can live for 30 minutes, but it also might need to live for a month, and I don’t know beforehand.

This is why I have been avoiding the word sandbox for exe.dev. I don’t think developers agents need something “sandbox” shaped.

Re:Fired by Google for creating the Google workspace CLI on Wednesday June 24, 2026 @02:34AM (#48655997)
This is the nature of large institutions: they have to distrust their own people. You cannot be relied on to act well, you must be checked first.

There is a good reason for this! In a large group of people, there are bad people.

This is also why I am done working at large companies. I learned a lot, met some great people, but am uninterested in a low trust environment. I like relying on my colleagues. When they do something unexpected, I am surprised and study it to learn, not lambast.

Re:I Miss Terry Pratchett on Saturday May 23, 2026 @09:01AM (#48247310)
My eight year old found a Terry Pratchett book of mine on the shelf the other day. He is a little too young to read them today but I realized I get to enjoy Pratchett all over again through him.
Re:The fun has been optimized out of the Internet on Tuesday May 05, 2026 @11:57AM (#48024280)
Nah. There are billions of people on the internet, and it varies from a dusty library to Atlantic City (though for some reason we let kids into the casino?). It is not one thing any more, but there are plenty of fun corners.
Re:What did you love about VB6? on Friday May 01, 2026 @08:42PM (#47982148)
I could type ~four lines and an alert box response from a visual form.

For years I have lamented the amount of paperwork necessary in most of modern programming to get things done. I don't know how important that is now that I have a machine fill out the paperwork. It would still be better if there was less fuss.

Re:Ask HN: Who is hiring? (May 2026) on Friday May 01, 2026 @11:51AM (#47976204)
exe.dev | full time member of technical staff | sf bay area only

competitive salary, meaningful early equity, 2 days a week in the downtown sf office

come build a cloud. we are doing everything from custom hardware to custom ssh servers to our own global load balancer. very senior small high-trust team looking for someone we can rely on to get done whatever is most important in the stack for the business. some days that means patch the vmm. other days it means figure out passkey quirks.

more about what we are building here: https://crawshaw.io/blog/building-a-cloud email me at [email protected].

Re:I am building a cloud on Thursday April 23, 2026 @03:46PM (#47880748)
One VC (well, two) understood it. Despite what you hear, there is a lot of variation. Speak to a lot of people.
Re:I am building a cloud on Thursday April 23, 2026 @08:25AM (#47874923)
Hello, author here.

Our exe.dev web UI still runs on AWS. We also have a few users left on our VM hosts there, as when we launched in December we were considering building on AWS. Now almost all customer VMs are on other bare metal providers or machines we are racking ourselves. We built our own GLB with the help of another vendor's anycast network. You can see that if you try any of the exe.xyz names generated for user VMs.

We would move exe.dev too, but we have a few customers who are compliance sensitive going through it, so we need to get the compliance story right with our own hardware before we can. It is a little annoying being tied to AWS just for that, but very little of our traffic goes through them, so in practice it works.

Re:I am building a cloud on Thursday April 23, 2026 @08:19AM (#47874876)
Author here.

I need to fix our transfer pricing. (In fact I'm going to go look at it now.) I set that number when we launched in December, and we were still considering building on top of AWS, so we put a conservative limit based on what wouldn't break the bank on AWS. Now that we are doing our own thing, we can be far more reasonable.

Re:I am building a cloud on Thursday April 23, 2026 @08:16AM (#47874858)
Author here.

Almost every VC rejected us when we went to get seed funding for Tailscale, we knew none of them. Friends of friends of acquaintances got us meetings. Fundraising is very possible for you if you are committed to building a business. Most important thing is don't think of fundraising as the goal, it is just a tool for building a business. (And some businesses don't need VC funding to work. Some do.)

The biggest challenge is personal: do you want to build a business or do you want to work with cool tech? Sometimes those goals are aligned, but usually they are not. Threading the needle and doing both is difficult, and you always have to prioritize the business because you have to make payroll.

Re:I am building a cloud on Thursday April 23, 2026 @08:11AM (#47874806)
Author here. Most of our infra is custom, the VMM is based on cloud-hypervisor (a project spiritually similar to Firecracker). We have a lot of work to do, including on the VMM, but right now there is more value for users if we spend our time on the VM management layer and GLB.
Re:Series A for Exe.dev on Wednesday April 22, 2026 @04:06PM (#47868602)
Hi, co-founder here. If you would like more detail, and often HN does, I wrote up some more about what we are doing here: https://crawshaw.io/blog/building-a-cloud
Re:SpaceX's S-1 Filing on Wednesday April 22, 2026 @12:21PM (#47865776)
This is an S-1 for Firefly Aerospace Inc.

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