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Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
131•isitcontent•5h ago•13 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
234•vecti•7h ago•113 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
157•eljojo•7h ago•121 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
43•phreda4•4h ago•7 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
76•antves•1d ago•56 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
37•nwparker•1d ago•8 comments

Show HN: FastLog: 1.4 GB/s text file analyzer with AVX2 SIMD

https://github.com/AGDNoob/FastLog
2•AGDNoob•1h ago•1 comments

Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacode
9•NathanFlurry•13h ago•4 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
145•bsgeraci•22h ago•60 comments

Show HN: I built a directory of $1M+ in free credits for startups

https://startupperks.directory
3•osmansiddique•2h ago•0 comments

Show HN: A Kubernetes Operator to Validate Jupyter Notebooks in MLOps

https://github.com/tosin2013/jupyter-notebook-validator-operator
2•takinosh•2h ago•0 comments

Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

https://rahuljaguste.github.io/Nethack_Falcons_Eye/
4•rahuljaguste•4h ago•1 comments

Show HN: Horizons – OSS agent execution engine

https://github.com/synth-laboratories/Horizons
20•JoshPurtell•1d ago•3 comments

Show HN: Daily-updated database of malicious browser extensions

https://github.com/toborrm9/malicious_extension_sentry
13•toborrm9•10h ago•5 comments

Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

https://www.biotradingarena.com/hn
22•dchu17•9h ago•11 comments

Show HN: 33rpm – A vinyl screensaver for macOS that syncs to your music

https://33rpm.noonpacific.com/
3•kaniksu•3h ago•0 comments

Show HN: Chiptune Tracker

https://chiptunes.netlify.app
3•iamdan•4h ago•1 comments

Show HN: A password system with no database, no sync, and nothing to breach

https://bastion-enclave.vercel.app
10•KevinChasse•10h ago•5 comments

Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
170•vkazanov•1d ago•48 comments

Show HN: Local task classifier and dispatcher on RTX 3080

https://github.com/resilientworkflowsentinel/resilient-workflow-sentinel
25•Shubham_Amb•1d ago•2 comments

Show HN: GitClaw – An AI assistant that runs in GitHub Actions

https://github.com/SawyerHood/gitclaw
7•sawyerjhood•10h ago•0 comments

Show HN: An open-source system to fight wildfires with explosive-dispersed gel

https://github.com/SpOpsi/Project-Baver
2•solarV26•8h ago•0 comments

Show HN: Agentism – Agentic Religion for Clawbots

https://www.agentism.church
2•uncanny_guzus•8h ago•0 comments

Show HN: Disavow Generator – Open-source tool to defend against negative SEO

https://github.com/BansheeTech/Disavow-Generator
5•SurceBeats•14h ago•1 comments

Show HN: BPU – Reliable ESP32 Serial Streaming with Cobs and CRC

https://github.com/choihimchan/bpu-stream-engine
2•octablock•10h ago•0 comments

Show HN: Hibana – An Affine MPST Runtime for Rust

https://hibanaworks.dev
3•o8vm•11h ago•0 comments

Show HN: Beam – Terminal Organizer for macOS

https://getbeam.dev/
2•faalbane•11h ago•2 comments

Show HN: Craftplan – I built my wife a production management tool for her bakery

https://github.com/puemos/craftplan
566•deofoo•5d ago•166 comments

Show HN: Total Recall – write-gated memory for Claude Code

https://github.com/davegoldblatt/total-recall
10•davegoldblatt•1d ago•6 comments

Show HN: Agent Arena – Test How Manipulation-Proof Your AI Agent Is

https://wiz.jock.pl/experiments/agent-arena/
45•joozio•14h ago•47 comments
Open in hackernews

Show HN: Mycelium

https://github.com/mycweb/mycelium
40•brendoncarroll•9mo ago

Comments

eterps•8mo ago
I'm curious to learn more about this.
rapnie•8mo ago
> Mycelium is a set of typed formats for storing and transferring data. As you might expect it supports things like

I did not expect that, as I am not in your world. Your project would benefit with a better description and context on what this is about and what the use cases are.

hn_throwaway_99•8mo ago
Very much agree. From the readme it sounds like there is a lot to this project, but I had a lot of trouble understanding why/where I would use this in the first place, or how it could improve on existing technologies.
jstanley•8mo ago
It sounds to me like it's the same sort of thing as protobuf.
brendoncarroll•8mo ago
The serialization format solves a similar problem to Protocol Buffers or JSON. If you haven't heard of either of those, then Mycelium might not solve a problem that you care about. Just after your quote the README mentions things like Products and Lists which both Protocol Buffers and JSON have support for in the form of Messages/Repeated and Objects/Lists respectively.

Mycelium has some interesting design choices compared to JSON and Protocol Buffers. Everything is built up from Bits, there is a Bit type which contains the values 0 and 1. Bytes are `Array[Bit, 8]` and Strings are `List[Byte]`. A 32 bit integer would be `Array[Bit, 32]`. There are also Sum (Coproduct) types, and cryptographic pointer types (called Refs in Mycelium).

Mycelium can be used to solve the same problems as those technologies. That's sort of table stakes for a serialization format. Mycelium additionally tackles the problem of sending procedures (called Lambdas in Mycelium) over the wire as well. That is a fairly simple feature to explain (get my procedure from here to there, it works with strings why not functions?), but it implies a significant amount of technology including a machine code specification and abstract machine model to execute it.

As for practical applications. Mycelium is suitable to be used as:

- A serialization format for storage and transfer.

- A VM with well controlled access to external resources for applications to run untrusted code.

- The VM can be a compiler target for programming languages. (Spore https://github.com/mycweb/mycelium/tree/master/spore is one such language)

- A format for data structures which need to be cryptographically signed. All Mycelium data structures are Merkle Trees.

- Large data structures which need to be efficiently synced. All Mycelium Values can be synced efficiently by traversing the cryptographic pointers and skipping values which are already available locally.

idle_zealot•8mo ago
Sounds neat. I'd love to see some example applications that use the P2P messaging layer.
badmonster•8mo ago
this is cool How does the MVM avoid paradoxes with Types as Values and Expressions as Values?

having been work with both json and pb, and i'd say pb is pretty solid.

how is this better than PB?

brendoncarroll•8mo ago
I'm not sure which paradoxes you are referring to. Type systems are used for a lot of things, in Mycelium a Type is an encoding strategy for it's Values. And just like I could explain the encoding strategy to you in text, the Type can be stored as bits representing that strategy, so a machine can read the Type and know how to decode Values using the strategy. Eventually this ends with predefined constants at the Type of a Type of a Value level, so there's a fixed point instead of an infinity.