#Metaprogram
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infosec.skyfleet.blue
Lean 4 kernel soundness bug: forging proofs via nested inductive projections (0 = 1 demonstrated)
Lean 4 kernel soundness bug: forging proofs via nested inductive projections (0 = 1 demonstrated)
Posted by Jonathan Brossard on Aug 01 Dear list, I hope this email finds you well. I'd like to bring attention to a soundness vulnerability in the Lean 4 theorem prover kernel that allows a malicious metaprogram to cause the kernel to accept invalid proofs, including proofs of false statements such as False and 0 = 1, with no axioms and full kernel checking enabled. --[ Summary The Lean 4 kernel fails to validate that projection expressions in nested inductive type...
seclists.org
August 2, 2026 at 2:46 AM
elfprince13.mumak.app
shoutout to @mattkeeter.com for building a decent CSG LISP experience but Studio really desperately needs to be in Racket so I can metaprogram it better
July 20, 2026 at 2:10 AM
nonpareille.dev
Yeag, for my purposes a simple metaprogram does the job well enough, but I'm not trying to completely cover language standards for every use case so I get it.

If there's anyone working on a TS for actual closures that don't rely on trampolining like GCC's nested functions I'd love to know.
July 15, 2026 at 2:23 AM
nonpareille.dev
One of the singular best ideas to bring to C. Just this and standardized closures would really take C into modern territory IMO. (some proper static type introspection would be really nice too, but that's far easier to just metaprogram myself)
thephd.dev Björkus "No time_t to Die" Dorkus @thephd.dev · Jul 12
Defer TS going out in ~7 days. Speak now or forever hold your peace.

Paper with reasons: thephd.dev/_vendor/futu...

Standardese wording: thephd.dev/_vendor/futu...
N3927: Improved __attribute__((cleanup)) Through defer
thephd.dev
July 12, 2026 at 8:59 PM
bufbvr.bsky.social
With Metaprogram targeting them for massive loses, why don't they DIARRHEA about it, we have diarrhea on pews... Camp grafitti. Who's that? Hall of Fart Fart? What's the difference between a nerd and a bad dud? A bad dudester? A bad dudester?
May 28, 2026 at 7:25 AM
lipstickscribbles.bsky.social
To add to this, AI usage is approaching zero on a metaprogram project bc AI can't figure context out what it's looking at any longer.

Love to see this studied as my sus always was AI couldn't keep context of a metaprogram when push came to shove.
May 20, 2026 at 7:30 PM
aria.city
fhehfhd no hate no hate !! i learned to template metaprogram over the weekend lowkey its soooo fun github.com/leastfavorit...
May 10, 2026 at 6:29 PM
epsteinweb.bsky.social
Parts 1-3/3 — EFTA02711265.jpg
#epsteinweb #efta02711265
https://epsteinweb.org
Available in the iOS app store now!
https://apps.apple.com/us/app/epstein-web/id6758880661
EFTA02711264 | EFTA02711265 impulse happened then. In any event, the present instant is the plane upon which the signals of all being are projected.al This instant, the interval, constitutes all that is directly experienced. It was for man the abstraction, his AchillesaTM heel. In this evolutionary stage, a stage beyond space and time, the interval is closed forever, and man ceases to exist. Man ordered his experience in terms of psychological considerations of the nonexistent mind. But the ordering of experience is always on the here-andnow level. The interpretation of the ordering is always at the there-and-then level. Be aware that the brainaTMs operation is a continuing activity of ordering in the here-and now. There was always ordering in the here-and-now while man deluded himself with considerations there-and-then, considerations of a world that didnaTMt exist. A world that never had existed. The world of the past. A fractional instant, and yet the past. Because of that interval man was able to exist. Man, a relic of the instantaneous past. Man, an instant too old to exist. Things not existent should be of no interest to us. All those things rendered unto man are based on a system that deals with illusion. The interpretation of the ordering of the brain takes place while new ordering is continually happening. It is almost as though there were two parallel planes. Almost. We might even assume there was a choice between living in one plane or another. Actually, there is no choice. There is no choice. There is only the ordering and arrangement, the here-and-now. Some of us, most of us, cannot recognize this level and continue by blindness, by inertia, by pretension, the delusion that we are men. ItaTMs a mistake. Man is dead. Man never existed at all. Our awareness as experience is past experience. Dreaming. Man is dead. ItaTMs a world of information. Information in this context refers to regulation and control and has nothing to do with meaning, ideas, or data. arrAny system is said to be able to receive information if when a change occurs the system is capable of reactions in such a way as to maintain its own stability.ii4 Information is nothing but an abstraction. As an abstraction it will allow for new observations and associations, for discernment of patterns and organization. Note that the reference is to a reaction to change. The concern here is only with the reaction, the effect. Information is a measure of the effect. This refers to how the control center of the organism, the brain, reacts to change in order to maintain continuity. We are dealing with activity integrated on the neural, the brain level, i.e., the present. Thus, when discussing information, we are talking about the brainaTMs response in terms of present, direct experience. This response is always effected without consent or awareness. There is no choice. There is no information unless there is a change. aeelnformation does not exist as information until it is within the higher levels of abstraction of each of the minds and computed as such. Up to the point at which it becomes perceived as information, it is signals. These signals travel through the external reality between the two bodies, and travel as signals within the brain substances themselves. Till the complex patterns of traveling neuronal impulses in the brain are computed as information within the cerebral cortex, they are not yet information. Information is the result of a long series of computations based on data signal inputs, data signal transmissions to the brain substance, and recomputations of these data.r Information is an abstraction to be used for measuring the communication of pattern, order, and neural inhibition. What is the information from an electric light bulb? No information. What is the information from a book? No information. keTo speak of a change as giving information implies that there is somewhere a receiver able to react appropriately to the change, Be concerned only with the changes in the operations of the receiver, the brain, in terms of the transactional present. Do not confuse information with signals or the source of signals. keThe mind of the observer-participant is where the information is constructed, by and through his own programs, his own rules of perception, his own cognitive and logical processes, his own metaprogram of priorities among programs. His own vast internal computer constructs information from signals and stored bits of signals.117 Information is a process. There are no sources of information; there are no linear movements of information to the brain. EFTA_R1_02124781 EFTA02711265
April 19, 2026 at 12:26 AM
madidier.fr
I'm not even 100% sure you can metaprogram at the typelevel in ocaml the way you do in Haskell with GHC's Generic typeclass. Do you figure it may be possible with signatures and module functors ? 🤔
March 24, 2026 at 12:35 PM
bencope.land
Yesterday I went down a rabbit hole of personal reflection (no pun intended) of meta programming and how the approach to an agentic system I took with MOTHER, written in #fsharp, actually aligns nicely with F#’s lineage in the programming language world.

blog.bencope.land/mother-metap...
MOTHER, Metaprogramming, and the Meta Language
I've written about MOTHER's philosophy and its mechanics. This post is about what I realized after I had some time to step back and reflect on the system once it was in place. MOTHER is a metaprogram...
blog.bencope.land
March 12, 2026 at 6:47 PM
codebeam.bsky.social
What if you could metaprogram your AI prompts?
@redrapids.bsky.social explores metaprompting - creating prompts that write prompts, just like Elixir code that writes code.
Learn systematic AI-assisted development using patterns you already know.
codebeamvancouver.com/talks/metapr...
March 2, 2026 at 5:31 PM
bongwatering.bsky.social
Pufffft 2 million loc? Pfft I can metaprogram one trillion lines of `if false pass` in an hour and I’ll assure you it will run just about as well as this guy’s programs.
February 7, 2026 at 11:31 AM
epsteinweb.bsky.social
Part 1/2 — HOUSE_OVERSIGHT_013238.jpg
#epsteinweb #houseoversight013238
322 18 Advanced Self-Modification: A Possible Path to Superhuman AGI schema are implicitly variables — they vary from one instance of schema execution to the next: —and may be treated as such for supercompilation purposes. The metaprogram executes a program without assuming specific values for its input variables, creating a tree as it goes along. Each time it reaches a statement that can have different results depending on the values of one or more variables, it creates a new node in the tree. This part of the supercompilation algorithm is called driving — a process which, on its own, would create a very large tree, corresponding to a rapidly-executable but unacceptably humongous version of the original program. In essence, driving transforms a program into a huge “decision tree”, wherein each input to the program corresponds to a single path through the tree, from the root: to one of the leaves. As a program input travels through the tree, it is acted on by the atomic program step living at each node. When one of the leaves is reached, the pertinent leaf node computes the output value of the program. The other part of supercompilation, configuration analysis, is focused on dynamically reduc- ing the size of the tree created by driving, by recognizing patterns among the nodes of the tree and taking steps like merging nodes together, or deleting redundant subtrees. Configuration analysis transforms the decision tree created by driving into a decision graph, in which the paths taken by different inputs may in some cases begin separately and then merge together. Finally, the graph that the metaprogram creates is translated back into a program, embody- ing the constraints implicit in the nodes of the graph. This program is not likely to look anything like the original program that the metaprogram started with, but it is guaranteed to carry out the same function [NOTE: Give a graphical representation of the decision graph corresponding to the supercompiled binary
February 7, 2026 at 9:29 AM
mrpowershell.com
Nah, it's that thing that is used to automate lots of stuff and can metaprogram other languages.

Afaik not running on Nintendo's yet.

But has been used to help test Nintendo / Xbox games since 2010.

So probably the thing that drives the Mario Kart in tests.
February 6, 2026 at 9:06 PM
graceful.dev
When is it appropriate to metaprogram? Today's episode looks at one situation in which it may be a good choice.
graceful.dev/courses/tapa...
Macro
When is it appropriate to metaprogram? Today's episode looks at one situation in which it may be a good choice.
graceful.dev
January 13, 2026 at 6:00 PM
haoyin.bsky.social
#SpatialOmics

Human #Glioblastoma contains structured & disorganized regions 50:50

Spatial Metaprogram Visium CODEX framework➡️
NDRG1+ hypoxic mesenchymal-like tumor cells as the organizer of 5-layered structure

Angiogenic vs Immunomodulatory microvessels

#Cell 2024
www.cell.com/cell/fulltex...
December 14, 2025 at 7:57 PM
katachora.hachyderm.io.ap.brid.gy
Guess I'm really going to rewrite it in LISP.

Or rather, I'm going to write some LISP to read your code's AST and programmatically rewrite that as LISP, because why program when you can metaprogram.

Then you get metabugs and metaheadaches and metaaccolades.

But seriously, this needs to be […]
Original post on hachyderm.io
hachyderm.io
November 30, 2025 at 7:30 AM
elight.tenforward.social.ap.brid.gy
@mergesort Perfect. Metaprogram your metaprogramming. Use generics in your generics.
October 2, 2025 at 11:46 PM
kythra.bsky.social
to metaprogram when you're attempting to optimize for size. In a properly statically typed language it's relatively easy to implement treeshaking and get your final binary down to something very minuscule
September 27, 2025 at 10:34 AM
neuralgrndstate.bsky.social
It's time to consider neural feature as the core property of cancer cells, and its role in determining cancer cell phenotypic traits: metastasis, stemness, immune evasion.., &TME...
'...neural-like metaprogram enrichment were conserved features of MTCs'
July 15, 2025 at 11:59 AM
neuralgrndstate.bsky.social
It's time to consider neural feature as the core property of cancer cells, and its role in determining cancer cell phenotypic traits: metastasis, stemness, immune evasion.., &TME...
'...neural-like metaprogram enrichment were conserved features of MTCs'
July 15, 2025 at 11:57 AM
neuralgrndstate.bsky.social
It's time to consider neural feature as the core property of cancer cells, and its role in determining cancer cell phenotypic traits: metastasis, stemness, immune evasion.., &TME...
'...neural-like metaprogram enrichment were conserved features of MTCs'
@cp-cancercell.bsky.social
July 15, 2025 at 11:55 AM
neuralgrndstate.bsky.social
Cancer cells≈neural cells

'Increased CIN and NEURAL-like metaprogram enrichment were conserved features of MTCs (metastatic tumor cells)'
www.cell.com/cancer-cell/...
Pan-cancer human brain metastases atlas at single-cell resolution
Xing et al. construct a comprehensive pan-cancer human brain metastasis (BrM) atlas at single-cell resolution, uncovering five major BrM ecotypes associated with distinct phenotypic characteristics. T...
www.cell.com
May 9, 2025 at 12:30 PM