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Dave Nicponski

@virusdave.bsky.social
1.1K followers 311 following 1.2K posts

{Math,FP,computer} geek; NYC licensed dispensary owner; former: Principal Software Engineer @Robinhood, SW Architect @Bridgewater, CTO @SeamlessDocs, Googler, Tweep, Limewire; loving life in NYC. Might run for Congress. People want leaders with spines.

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Reposted by Dave Nicponski
Abdul El-Sayed @abdulelsayed.bsky.social · 28/09/2026
Mike Rogers is a corporate sellout who moves back to Michigan every few years to run for office to take another swing at the revolving door of corporate politics.
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Chaucer Doth Tweet @levostregc.bsky.social · 24/09/2026
Why ben thei so numerous The songes about rainbowes And what ys on the othir syde? "Rainbowes are visiounes Yet onlye illusiounes, And rainbowes have no thynge to hyde."
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Steven Beschloss @stevenbeschloss.bsky.social · 24/09/2026
50 percent tariffs for our beloved neighbor and historic ally, Canada. A red carpet and a military flyover for Communist China’s leader. Donald Trump is a sick man and a danger to America.
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Physics @physics.bsky.social · 17/09/2026
Carlsberg Brewery offered Niels Bohr a house next to the brewery in honor of his 1922 Nobel Prize in Physics. One of the benefits of the house was a direct pipeline from the brewery, effectively providing Bohr with free and unlimited beer for life.
A black and white historical portrait of Niels Bohr sitting on stone steps. He is wearing a rumpled suit, a tie, and heavy boots, with one leg crossed over the other.
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Mr. Horror4H @horror4h.bsky.social · 19/09/2026
Terra's Theme remains one of the most beautiful and moving pieces of music I've ever heard and the game that followed did not disappoint.
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Walk To Narshe Pixel Remaster
ALT: Walk To Narshe Pixel Remaster
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Thor Benson @thorbenson.bsky.social · 18/09/2026
Democratic strategists: Ahhh! What's the right message!!?? Where do we moderate!?!? Jon Ossoff: This administration is horrible. I hate these people. We should put them in jail. I'm pissed Voters: This guy is cool Strategists: I can't figure it out!!!!!
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waffle .-. @waffle.pet · 13/09/2026
little hurts more than "the thing that you've been procrastinating for months was actually important and you blew the deadline and now you have to accept the consequences"
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NY Times Pitchbot @nytpitchbot.bsky.social · 11/09/2026
Mr. Trump’s choice to lead a mass pledge of allegiance to himself, followed by commanding his followers to cheat in the upcoming election, was unusual by presidential standards.
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Lizzy Rose Oliver - Voice Actress @lizzyrosevo.bsky.social · 11/09/2026
Men crying about "fairness in women's sports" should immediately be questioned on their knowledge about women's sports.
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Don Moynihan @donmoyn.bsky.social · 06/08/2026
Is this just business as usual in politics? No. Approval rates of federal disaster aid requests were about the same regardless of the state and did not vary much with the party of the President. This graph powerfully conveys the scale of the partisan discrimination now.
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Soraya Nadia McDonald @soraya.press · 04/08/2026
it's not why *everything* sucks, but having all three branches of the federal government captured by thieves, abusers, bigots, and cowards is definitely why a lot of things suck
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Carl Quintanilla @carlquintanilla.bsky.social · 20/07/2026
“The Guardian wins the ‘Caption of the Year’ competition: - William Merrin @theguardian.com
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Adam Serwer @adamserwer.bsky.social · 16/07/2026
It’s really a great question because it immediately reveals whether someone is unfit for public service. bsky.app/profile/atru...
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Radley Balko @radleybalko.bsky.social · 16/07/2026
"Stop criticizing us or will keep murdering people" is just a jaw-dropping thing for a government official to say.
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Bradley P. Moss @bradmossesq.bsky.social · 16/07/2026
"Be quiet or we'll keep killing you" is one hell of a message for the midterms.
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Ahmed Baba @ahmedbaba.bsky.social · 16/07/2026
It’s impossible to move the debate forward when one side is committed to upholding a disinformation-fueled, dehumanizing false reality that leads to the state-sanctioned street killings of innocent people. There are not two sides to this particular story. Full stop.
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Dean Obeidallah @deanobeidallah.bsky.social · 16/07/2026
Trump should not be giving a national speech tonight. He should be in prison for attempting a coup after the 2020 election and inciting the Jan 6 terrorist attack.
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Bill Grueskin @bgrueskin.bsky.social · 16/07/2026
In the realm of questions posed during Senate hearings, this one from Ossoff -- "Isn't it humiliating to be unable to answer this?" -- ranks right up there with "Have you no sense of decency, sir, at long last?"
Isn't it humiliating to be unable to answer this question, to have MR. KELLY

MR OSSOFF
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Steven Beschloss @stevenbeschloss.bsky.social · 16/07/2026
Please explain to me how the same senators who voted for the Epstein Transparency Acf would now vote to confirm the man who’s leading the continuing coverup of the Epstein files.
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Connor Ewing @cmewing.bsky.social · 14/07/2026
Completely—and utterly irresponsibly—unhinged.
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hansotten.bsky.social @hansotten.bsky.social · 13/07/2026
The KIM-1 explained Based upon my experience and study of the KIM-1 since 1979. Many notes on paper and files everywhere. Now consolidated in a lot of pages. retro.hansotten.nl/6502-sbc/kim...
retro.hansotten.nl
The KIM-1 explained – Retro Computing
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Anthony Michael Kreis @anthonymkreis.bsky.social · 14/07/2026
Officers shooting a man, running away from law enforcement, who is not a target of law enforcement, and who poses no threat to law enforcement, is murder. Federal officers do not have the power to commit summary executions because they are aggrieved.
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Kat Abughazaleh @katmabu.bsky.social · 08/07/2026
What we already know is horrific. Imagine how bad discovery would be if the government is willing to pay our fees (something the government doesn’t readily do) just to avoid it.
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The Donk @thedonk.bsky.social · 07/07/2026
Bombs Iran - pays Iran $300B Sells memecoin for $75 - now worth $2 Endorses candidate - candidate loses "Fixes" reflecting pool - algae blooms, paint peels Goes to Knicks game - Knicks lose Hijacks 250th birthday - no one attends Meddles in World Cup - US loses It's like there's a pattern #ETTD
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Steve Vladeck @stevevladeck.bsky.social · 06/07/2026
This passage from @davidlat.bsky.social perfectly captures the false dichotomy you see so often from the Supreme Court's defenders: The Court is held out as "independent" because it doesn't *always* rule for Trump. That whitewashes (1) how often it *does*; & (2) its bad behavior in non-Trump cases.
Screenshot from David Lat's "Original Jurisdiction" newsletter that reads:

Runner-up for Judge of the Week: Chief Justice Roberts. The end of a Term brings with it evaluations of the Supreme Court—and, of course, the Chief Justice as its leader. For critiques of the current conservative Court—and, implicitly, Chief Justice Roberts—see the views of Professors Kate Shaw and Steve Vladeck in this spirited debate in The Times (gift link).

I call it a “spirited debate” because of the vigorous pushback that Shaw and Vladeck received from Professor Will Baude (who clerked for the Chief). See also this post at Executive Functions by Professor Jack Goldsmith—no fan of the Trump administration—titled “The Powerful, Resilient, Independent Supreme Court.” Or if Goldsmith is too conservative a commentator for your tastes, check out this staff editorial by The Washington Post (gift link), “The Supreme Court’s not-so-MAGA majority.”
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Andrew M. | Founder & Advisor 🇬🇷 🇺🇸 @andrewmfounder.bsky.social · 05/07/2026
The corruption is just staggering.
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Mayor Zohran Kwame Mamdani @mayor.nyc.gov · 04/07/2026
Happy Fourth of July, New York City
Mayor Mamdani on a boat smiling in front of the Statue of Liberty.
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Marc Elias @marcelias.bsky.social · 04/07/2026
"In every stage of these Oppressions We have Petitioned for Redress in the most humble terms: Our repeated Petitions have been answered only by repeated injury. A Prince, whose character is thus marked by every act which may define a Tyrant, is unfit to be the ruler of a free people."
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Marc Elias @marcelias.bsky.social · 03/07/2026
Washington Post v. Democracy Docket The media you consume is a statement of your values. Support pro-democracy independent media. Subscribe to Democracy Docket. bit.ly/4qmEiFz
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The Wolfpack @wolfpack11720.bsky.social · 03/07/2026
Kevin Necessary
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Andrew M. | Founder & Advisor 🇬🇷 🇺🇸 @andrewmfounder.bsky.social · 02/07/2026
77M people voted for this pathologically-lying, criminal sociopath.
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Adam Kinzinger @adamkinzinger.substack.com · 03/07/2026
The depth of corruption is so staggering that it feels unreal. But it is. Trump “rug pulled” hundreds of millions from his fans through his crypto, and now doesn’t even pretend otherwise. We cannot allow this to feel normal. Watch the full video (link) youtu.be/ISsdYxyd33s?...
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gabby @fullmoon.id · 03/07/2026
new blog post incoming and I'm pretty excited about this post
Mechanized type inference for record concatenation

The context behind this post is that I'm working on a type checker and language server for Nix and there are three features of the language which make it tricky to typecheck (which I'll dub the "three horsemen of Nix type inference"):

- computed imports (imports that depend on values in scope)

- computed record fields and field accesses

- // (the right-biased record concatenation operator) which is the subject of this post!

Here "right-biased record concatenation" means combining two records, preferring fields from the right record if they overlap. For example:

nix-repl> { x = 1; y = 2; } // { y = true; z = "hi"; }
{ x = 1; y = true; z = "hi"; }

The good news is that type inference for record concatenation is not a research problem because the algorithm was published in 1991 as "Type inference for record concatenation and multiple inheritance" by Mitchell Wand (henceforth "the Wand paper"). The bad news is that as far as I can tell no language in existence implements the type inference algorithm described in that paper, so even though it's not a research problem it's still not a solved problem.

A big reason why is that the presentation in the paper is informal and not "easy to mechanize" meaning that it doesn't translate well to code and glosses over important details. In this post I hope to fix that by by spelling out a formal algorithm equivalent to the original paper. In particular, I'll formalize the algorithm in three ways:

- a declarative natural deduction semantics
- an algorithmic semantics using constraint generation and resolution
- a reference Haskell implementation (≈400 lines of code)

This post builds upon my previous post: Record type inference for dummies. Reading that post will not necessarily prepare you for this post if you're a type theory newcomer, but it will at least help you understand the basic terminology/syntax and also appreciate why this is a challenging problem to solve.
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Arbaz Kakkar5 @arbazkakkar5.bsky.social · 03/07/2026
The President of the United States is a traitor.
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Ioannis Ziogas @ziogas.bsky.social · 02/07/2026
Today's NYT jobs report coverage (left) compared to exactly 2 years ago under Biden (right). Notice the numbers.
NYT headline (July 2, 2026): U.S. Hiring Continues at a Steady PaceNYT headline (July 2, 2024): US Job Growth Extends Streak, but Signs of Concern Emerge.
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Joe Roberts 🔥💙🔥🐸 @robbyjoe.bsky.social · 02/07/2026
Here’s some straight talk from someone who knows some things.
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brent sewer socialist🚰🌹 @therealbrent.bsky.social · 02/07/2026
I haven’t seen *any* coverage of this and worry people have just become numb (or are too distracted by the World Cup, Knicks, etc.)
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The Liberal BoJack @thelibbojack.bsky.social · 01/07/2026
Can everyone just step back and realize how insane it is that the US Supreme Court had to rule on the constitutionality of the US CONSTITUTION and the vote to uphold the Constitution wasn't unanimous!!!
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George Conway ⚖️🇺🇸 @gtconway.bsky.social · 30/06/2026
@steverattner.bsky.social: "Trump’s net worth has nearly tripled in his second term, reaching $6.5 billion. His administration is the most brazenly self-enriching in American history."
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4fuxake @blueheartedly1.bsky.social · 01/07/2026
Birthright citizenship is in the constitution. To the 3 justices who chose to ignore it, you know what's NOT in the constitution? The number of justices!
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brent sewer socialist🚰🌹 @therealbrent.bsky.social · 30/06/2026
If Democratic voters continue to re-elect Democrats who don’t support expanding the Supreme Court then we only have ourselves to blame for the end of our democracy
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George Conway ⚖️🇺🇸 @gtconway.bsky.social · 30/06/2026
This is just flat-out criminal. {gift link} www.nytimes.com/2026/06/28/w...
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Paul Waldman @paulwaldman.bsky.social · 29/06/2026
I'll tell you one thing, any Democratic 2028 presidential candidate who says they're going to "restore balance" and not fire every last Trump appointee on every commission on their first day in office doesn't deserve a single primary vote
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Barred and Boujee aka Madiba Dennie @audrelawdamercy.blacksky.app · 30/06/2026
The more I had to say: I've said it now ballsandstrikes.org/scotus/trump...
ballsandstrikes.org
Supreme Court Rules Trump Can Fire Any Agency Head Who Doesn’t Make John Roberts Wealthier
It is very important for presidents to be able to fire agency heads at will, unless that agency is very important to John Roberts.
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Alex Hern @hern.bsky.social · 29/06/2026
Don’t be disheartened America, it’s actually fine having a system that gives effectively unlimited executive power to the head of government. You just have to make sure you only ever elect good chaps to head your government! You did remember to only ever elect good chaps, right
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SLC Unc @dadshammdad.bsky.social · 29/06/2026
Hey guys, I fucked up so badly that fixing it would bankrupt the country.
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Philip N Cohen @philipncohen.com · 29/06/2026
Checking in on MAHA day at the American State Fair. Managed to get pretty close to the stage
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jamelle @jamellebouie.net · 29/06/2026
this is absolutely wild. where does roberts think these agencies come from?!? who invested them with authority to act? whose mandate are they designed to execute? the president is the chief EXECUTive. his job is executing the will of Congress as it spells out in its duly-passed laws!
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Cameron 🇺🇸🗽🦅 @cameroncorduroy.bsky.social · 29/06/2026
5-4 on "can the President literally fabricate charges against a bureaucrat he doesn't like to get them fired" is bleak
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