david barsky

@davidbarsky.com

1155 Followers 503 Following

i like cooking and reading books. my day job is to work on ersc.io, but before, it was rust-analyzer. he/they is fine.

claude output: The decisive facts: `third-party/rust/Cargo.lock` is untracked (never committed — not in `wlnrprvz` or its parent), so `reindeer vendor` re-resolves to latest every run. That's the structural source of drift: cc 1.2.64 in buck vs 1.2.62 in cargo, plus ~150 other shared transitives. `sync.py` asserts both "resolve the same dependency graph," but nothing enforces it. This is your call — the three directions have very different blast radius, and a wrong pick means a costly re-vendor + 7-commit rebase.
Claude Code output saying: One minor note: `repo()` is now an `async fn` with no `await` (a pure getter) to avoid churning ~24 `.repo().await` call sites; `clippy: :unused_async` is pedantic and not in the workspace lint set, so it stays quiet—flag me if you'd rather make it sync.
a linkedin post in which i describe ersc’s capabilities. it reads as follows: Here’s a preview of what we’re working on at East River Source Control: - A custom data store that scales to monorepos. For my former Meta friends and colleagues: we are aggressively O(changes), not O(repo). - jj-first concepts in the forge, with deep git compatibility. Nobody needs to switch from git if they don’t want to, but we think jj is nicer :) - Stacked diffs as a first-class primitive. We think they’re boring, obvious, and the right fit for a world where humans and machines both write code. We’re building the forge to run as hosted SaaS, in your own cloud account, or in your own datacenter (bring your own Kubernetes and S3-compatible object store). We’re also using Antithesis to deterministically simulate and test our forge end-to-end to surface race conditions or partial failures that cause data loss in distributed systems. We’re close to launching, so if you’re interested, send an email to contact@ersc.io!
Classification: Confidential Hi Team, I am from the Procurement team at HCLTech. We have purchased PostGre SQL through one of our vendors. We were informed through them that the product support is included in license cost but not integration support that user need to do on his own. Could you please explain what specifically is covered by "product support" versus "integration support"? User requirement is for support for the PostgreSQL database itself. They are not looking for support for the software used to integrate .NET applications with PostgreSQL. Also can you please check if we can also buy one of the licenses from below? https://postgrespro.com/products/postgrespro/standard https://postgrespro.com/products/postgrespro/enterprise Thanks, and Regards
the kagi translation of my quotes post. it reads: I am beyond humbled and excited to share a major milestone! 🚀 As of Monday, East River Source Control has officially grown to a team of 10 rockstars. 🔟✨ I am genuinely, ridiculously proud of the world-class team we’ve assembled and the disruptive product we’ve built from the ground up. The grind, the passion, and the vision are all coming together. 🛠️💎 We are just getting started, and I can’t wait to show you all the game-changing innovations we’ve been working on behind the scenes. Stay tuned! 📈🔥 #GrowthMindset #StartUpLife #TeamBuilding #Innovation #Leadership #Milestones #SourceControl
a receipt from apple, showing that i bought the new fancy monitor
our shared employer’s website with the text “Built for humans and machines working together” highlighted
our form d filing with the SEC
an orange cat lounging on my silver desktop computer.
a ct scan of my cat. the black on the left is a normal eardrum, the gray on the right is the mass that replaced her eardrum and ate through her skull
a butt fartison comic endorsing jj
a gemini-generated ben garrison cartoon endorsing jj
a gemini response of what the vet is doing when your dog collapsed and what your next steps are.
Immediate Next Steps 1. Veterinary Visit (Ideally Ophthalmology): Since this has been going on for 2 weeks and the eye is effectively "swollen shut," this is urgent. If your regular vet cannot see you today, you should consider an emergency clinic. You need to know if the eye is intact. 2. Do Not Force the Eye Open: If the cornea is thin or melting, pressure from your fingers could cause a rupture. Let the vet use a topical anesthetic to numb the eye first. 3. What to Ask the Vet: • Fluorescein Stain: To check for ulcers. • Intraocular Pressure (IOP): To rule out glaucoma or severe uveitis. • Sequestrum Check: Ask specifically if they see a brown/black plaque. How can I help you prepare for the vet visit? (e.g., I can help you summarize the timeline of her symptoms to ensure the vet has the full history.)
i asked gemini “My cat is a 3 year old DSH with known chronic herpesvirus infection with secondary URI, conjunctivitis, and ocular discharge. 2 weeks ago she developed persistent blepharospasm, chemosis, and conjunctival hyperemia in the left eye only. She is resistant to opening the eye and the globe cannot be visualized. What might be happening?” it responded: “This sounds very painful for your cat and requires prompt veterinary attention. The fact that the globe (eyeball) cannot be visualized distinguishes this from a "standard" herpes flare-up and moves it into the category of an ocular emergency. Because you cannot see the eye itself, you cannot rule out the most dangerous possibilities, such as a rupturing ulcer. Please do not attempt to force the eye open, as this could cause serious damage if the cornea is fragile. Here is a breakdown of what is likely happening behind the swelling:”
a bathroom selfie with me with wearing a mustache. my cat, miso, is in the background
a screenshot of claude code in a terminal. it has a tip that says "run /install-github-app to tag @claude right from your Github issues and PRs"
a screenshot of my claude usage, saying that I’ve maxed out my quota until 9 PM, but used 12% of my weekly quota.
From Last Week In AWS: Steve Klabnik leaving Oxide for a jj startup feels like 2012 all over again: betting early on infrastructure tooling that makes engineers' lives measurably better. He's notable in the Rust world, so of course the post spends the first third talking about Rust in accordance with that community's tenets.
two cats and a dog resting on a bed
a reese’s/oreo combo
jim downey clarifying
the flighty app reporting i spent nearly 4 days across 21 flights in an airplane in 2025
me wearing a denim shirt, dark blue jeans, and green banana
A screenshot of my LinkedIn, where it shows I used to work at Facebook, but now am the founder/secretary of East River Source Control.
a black and white cat sitting outside a bodega
me: it's one of things that absolutely happens but also don't want to see the evidence of libidinal excess recorded in the book of life (council bluffs, iowa, likely replicated to ashburn, virginia). it's indiscreet friend: Lol what the hell are you talking about
"The Damned Embargo" (DSD-1961-066) — Articulates the federal government's policy of non-recognition and non-interaction with Hell and the Tartarean Realms, prohibits diplomatic recognition or communication with Hell, and imposes sanctions on the Prince of Darkness and the members of his infernal government. While keeping this Directive in place, the administration of President Ronald Reagan relied on former Secretary of State Henry Kissinger to maintain informal and unofficial contacts within Hell, a practice continued by subsequent Presidents.
a notification from the ring app that says “the bears are back”.
jj reporting a Cargo.lock with a 5-sided conflict
a screenshot of helix’s inline diagnostics on rust code.
Honestly this is exactly what put me off Rust when I tried to learn it. Rustc is definitely not built with neurodivergent people with rejection disphoria (a huge subset of ADHD people) in mind.
ryan gosling as KD6-3.7, drenched in neon, looking off-camera
a cargo.toml with tracing (and tracing-subscriber) highlighted
From my perspective, this is the fundamental promise of async fn: easier, composable, explicit state machines. If a chunk of code absolutely needs to run to completion without letting anything else run, use a normal fn. If a chunk of code doesn’t need to call any async fns, use a normal fn. Basically, any function that can be written as a normal fn without breaking something, should be. It’s easier. But if you need to write a state machine, use async fn. It’s harder to understand than normal fn because of the inversion of control and potential for cancellation, but far easier to understand than the code you might write by hand to do the same thing! CAUTION: There’s a proposal to make code generic on whether or not it’s being used async, so that the same code could produce both a simple function and a Future. In this case you’d have to make sure to think about correctness in all possible ways your code could be used. I am suspicious, and I hope after reading this section, you are too.
a portrait of Michał Kalecki, who—amongst other things—authored “Political Aspects of Full Employment”
i’m user 25,487.
a picture of me wearing a black polo, corduroy shorts, high socks with sneakers and sunglasses. my hastily made bed and closet (with a single door ajar) is in the background.
a conversation between me and beatrix where i said "oh, that's the golikehellmachine gif"
The obsession with "memory safety" is annoying 1. How provably safe is your program if it's full of unsafe blocks? 2. There are many other kinds of safety besides "memory safety". Eg you can't claim that your system is "safe" if it can panic at any time
a photo of me (with a beard, in canadian tuxedo, holding a microphone) speaking at work-internal Rust conference
an advertisement on twitter from @dadsrights (a law firm) that says “Millions of dads will wish they could spend more time with their kids this weekend, we can help. Contact us today”
Door personnel quickly assess a person's status by sizing up physique, beauty, race, accent, clothes, watch, dress, even handbag. Red-soled Louboutin heels signal high status, but if the girl wearing them stands below five feet seven, matching the height of the "door girl" stationed at one club, she is not allowed inside. Especially if she's a person of color. [omitted non-highlighted text due to word count limits] Some of the clients that I interviewed, too, were subject to race-based discrimination. On one egregious occasion, a handsome French Middle Eastern man with a lot of inherited wealth and connections was out with his white male friend, to whom the “door girl” leaned in and whispered, “Your friend can’t come in unless you go inside and bring out a brown person he can replace. There’s too many brown people inside already.
be a guru-in-training. In one conversation, Adams enthused about the way that, thanks to TED talks, YouTube, and podcasts, "an accumulation of believers are now at a centralized spot, out there in this place we call cyber." He went on, "We're going to start to see believers start to come together, and build these communities and these colonies. ... That excites me—that I can go out and find other believers, and I believe our energy, our vibration, will start to deal with some of the major issues that have held us back." If Adams was talking primarily about dietary views not embraced by the medical mainstream, he was also open to a broader agenda of woo-woo thinking. He once declared a "firm" belief in reincarnation, and described a previous life as an ancient Sumerian.
two cats spooning in a chair
two cats sleeping in the window.
picture of two cats, one orange and one white, cuddling in front of a window.