Lean4 Datalog DSL Based on Google Zanzibar for AI Projects
Details
- External ID
- 49092730
- Source
- HN
- Company
- —
- Product
- Lean4 Datalog DSL Based on Google Zanzibar for AI Projects
- Website domain
- github.com
- Launched
- July 29, 2026
- Cohort
- —
- Upvotes
- 18
- Upvotes percentile
- 0.6893667861409797
- Tags
- —
- Fetched at
- Sept. 8, 2026, 8:28 p.m.
- Updated at
- Sept. 8, 2026, 8:28 p.m.
Description
Google Zanzibar datalog lang lets you describe concepts and express how they are related. I generalize it to DSL you can use on Lean4 (and other languages) this lets you represent a knowledge base you can construct, store and evaluate, have it under git and improve without big engines or relaying on external infrastructure.Google's Zanzibar paper: https://storage.googleapis.com/gweb-research2023-media/pubto...
Enrichment
- Theme
- database infrastructure and developer tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- AI feature
- Project type
- Hobby / open-source project
- Normalized one-liner
- datalog dsl for ai projects in lean4
- Manually corrected
- False
Could you build this?
No Creating a domain-specific language and evaluation engine in Lean 4 based on formal relationship-based access control (Zanzibar) requires deep expertise in formal methods, type theory, and logic programming.
What it would actually take: The system requires formal language design using Lean 4's metaprogramming capabilities (macros, elaborators, tactics) to define syntax and operational semantics for Datalog/Zanzibar relationship tuples. It requires expertise in theorem proving, formal verification, fixed-point Datalog evaluation algorithms, and Lean 4 compiler internals.
Discussion
2 comments analyzed.
Concerns raised: Unclear how Lean tactics relate to actual proof writing requirements, Confusion about whether Lean requires writing out every proof step manually
Feature requests: Better documentation explaining Lean as functional language with dependent types, Clearer explanation of how datalog query system integrates with Lean proofs
Competitors
Other products that read as similar to this one — 2 launches clear the similarity bar.
Attention rank: #2 of 3 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 183 days after the earliest competitor.
- Kaizumi · ph · 2026-09-18 · 2 upvotes · similarity 0.33
- We are building Git for data · hn · 2026-01-27 · 9 upvotes · similarity 0.30
Other launches for this product
- No other launches for this product.
Same idea, different domain
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