Mononoke
A next-generation version control system developed by Meta (formerly Facebook) to support its enormous monolithic code repository, replacing an earlier customized Mercurial solution. Its core design includes distributed storage, efficient branch management, and optimizations for very large codebases.
Core Facts
Timeline (last 90 days)
The architecture of Anthropic's internal source code control system Scion has similarities to Meta's Mononoke, sparking controversy.
Mononoke is a distributed version control system backend developed by Meta to support ultra-large-scale monorepos, written in Rust, with the Sapling client as its companion.
If Scion is built on Mononoke code, Anthropic is obligated to publicly release its modified source code and retain the original copyright notices
Anthropic's Scion project is accused of extensively copying code from the open-source project Mononoke
If Mononoke adopts GPL, only "distribution" triggers the open-source obligation; if it is AGPL, then Scion may trigger it simply by providing services externally.
Anthropic has not yet made a public response regarding the incident in which Scion is accused of plagiarizing Mononoke.
The Scion incident was ignited by a discussion thread on Hacker News, sparking discussions in the developer community about open-source compliance and AI company ethics.
Scion's design references Google Piper and Meta's Sapling/Mononoke.
Community members believe that Anthropic's Scion project clearly draws its design inspiration from the Mononoke project.
Mononoke's core design includes distributed storage, efficient branch management, and optimizations for large-scale code repositories.
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All Facts (8)
The GPL family of licenses has Copyleft infectivity, requiring derivative works to be equally open-sourced, forming a natural barrier to commercial applications.
65%UnverifiedMononoke is a distributed version control system backend developed by Meta to support ultra-large-scale monorepos, written in Rust, with the Sapling client as its companion.
50%UnverifiedThe architecture of Anthropic's internal source code control system Scion has similarities to Meta's Mononoke, sparking controversy.
50%UnverifiedIf Scion is built on Mononoke code, Anthropic is obligated to publicly release its modified source code and retain the original copyright notices
50%UnverifiedIf Mononoke adopts GPL, only "distribution" triggers the open-source obligation; if it is AGPL, then Scion may trigger it simply by providing services externally.
50%UnverifiedScion's design references Google Piper and Meta's Sapling/Mononoke.
50%UnverifiedMononoke is a next-generation version control system developed by Meta (formerly Facebook) to support its enormous monolithic code repository, aiming to replace its previous customized Mercurial solution.
50%UnverifiedMononoke's core design includes distributed storage, efficient branch management, and optimizations for large-scale code repositories.
50%