Tweag by Modus Create

Introducing cooked-validators v9.0.0. - A revamped effect system (using Polysemy) with more granularity, reliability, separation of concerns and expressiveness. - A refined balancing mechanism, offering more user-control and an optimized solution in terms of transaction size overhead. - A new extension of our temporal logic DSL, allowing to modify traces with additional constructs such as logical negation and implication. Enjoy ... ⬇️

build //newsletter issue 31 just dropped From remote caching tricks to running Claude prompts as Bazel actions, plus how to stop external resources breaking your builds .. there's something for every build nerd in this issue. BazelCon '26 in Amsterdam, who's going? build.news

Join us tomorrow as we chat with the Cardano over Coffee crew about our revised proposal ⬇️

🎙️ Cardano Proposals Space, today at 1PM UTC Two proposals taking the stage: 🟢 Tweag (@tweagio) 🟢 Prisma Collective (@__prismaevents) CT DAO will be rescheduled to a later date. Format per proposal: → 10-15min pitch → 5 min community AMA Come hear what they're building and bring your questions. See you there 👋 x.com/i/spaces/1Xxyg…

Important Update : We have been listening and we want to be clear about what we are doing next. The feedback from DReps has been consistent. You understand how important Peras is for Cardano and you want to see it reach mainnet, but the community made it clear that committing two years of funding is not the right approach for this governance cycle and the scope was too broad. We heard that and we are acting on it. The revised proposal has a reduced budget, a shorter timeline, and a focused scope built around getting Peras to mainnet safely. Everything in it reflects the feedback we have received over the past few weeks. Cardano needs Peras. Transaction finality from approximately 12 minutes down to approximately 2 minutes is not a marginal improvement. It is essential for L2s, partner chains, and exchanges. The revised proposal is in its final stages of preparation and will be live very soon. Getting this passed within the current NCL cycle is critical for the ecosystem and we need your support. More details coming very soon

Peras is essential for Cardano. Transaction finality on Cardano today takes approximately 12 minutes. With Peras, that comes down to approximately 2 minutes. That improvement changes what can be built on Cardano, and is needed for L2s, partner chains, and exchanges. Faster finality means faster payments, more responsive applications, and a stronger network for everyone building on Cardano.

Hello Cardano! 🫡 Consensus (Leios) proposal, current status: 🗳️DReps: 57.55% Yes → we need >67% to pass. 🗳️Constitutional Committee: 3 YES votes 42.85% → we need >66.66% Voting ends on Sunday!

Normal nodes only see the final chain. The Hoarding Node monitors everything, including blocks that never made it. Detect attacks early. Spot anomalies before they become incidents. Full network visibility. Part of our 2026 Cardano proposal 👇

Genealogos v1.1.0 is out! 👀 This release adds CycloneDX 1.5 support, updated dependencies, and fixes for `nix run`. Full details: github.com/tweag/genealog…

Cardano DRepの皆さま 🇯🇵 日本のコミュニティの皆さまに、より分かりやすくご覧いただけるよう、本動画に日本語音声および日本語タイトルを追加しました。 本動画では、TweagチームがPerasおよびLeiosの開発に関する取り組み、これらのアップグレードがCardanoのL1の将来にとってなぜ重要なのか、そして信頼性、統合の複雑性、小規模SPOのコスト管理、さらに実社会での採用促進について、どのように考えているかを議論しています。 これは単なる研究ではありません。より強く、より速く、より回復力のあるCardanoを実現するためのインフラ開発です。 DRepの皆さまには、ぜひ本動画をご視聴いただき、内容をご確認のうえ、本提案への関心をさらに高めていただけますと幸いです。 皆さまの投票には意味があります。 皆さまのレビューには価値があります。 皆さまの声には力があります。 #Cardano #DRep #CardanoGovernance #Peras #Leios #CardanoJapan @tweagio

SPO costs are the thing I kept coming back to in this @Tweagio conversation. Peras gets us faster finality, but a busier chain usually means heavier nodes. If observability tooling, history expiry, and rollout safety don't land at the same time, smaller pools end up paying for the upgrade in storage and ops time. The interesting move from Tweag is treating the whole rollout as one delivery pipeline rather than five separate research grants. Forces the dependencies to be planned together. Wonder how many DReps are weighing the operator side before they vote.

@dfacastro Here's the linear-locks library hackage.haskell.org/package/linear…

New release: linear-base v0.8.0 github.com/tweag/linear-b… . With some love shown to the resource-aware IO monad from contributor @dfacastro in support of their fascinating linear-locks library

Voting closes 3rd June. Thank you to everyone who has voted so far. Voted No without a rationale? We genuinely don't know how to improve without your feedback. Drop us a message, we will respond to every concern directly. Full FAQ ⬇️

@DotareIO @KrisKowalsky Send us a dm 🙏

@KrisKowalsky @tweagio @tweagio would love your point of view on a few things.

The engineers who helped build Cardano’s core infrastructure want to help you build on it. As part of giving back to the ecosystem we are offering free technical advice and help to projects building on Cardano. @tweagio has been working on Cardano since 2018 with deep expertise. If you are building something and could use engineering support, send us a DM. No strings attached.

I voted on several governance actions. Please let me know if you have any feedback 🙏

👀