🛠️ sbt 2.0.0 is released! sbt 2.0 is a new major series of sbt, based on Scala 3 constructs and Bazel-compatible cache system. many thanks to Scala Center, Anatolii Kmetiuk (new maintainer), Adrien Piquerez (alumni), and other volunteers like Kenji Yoshida eed3si9n.com/sbt-2.0.0 #Scala

released sbt 1.12.12, featuring fix for console that references java.sql on JDK 9+ eed3si9n.com/sbt-1.12.12 #Scala

👩‍🔬 released sbt 2.0.0-RC15, featuring: - Scala 3.8.4 - ByteStream chunked upload/download for remote cache - fixes platform-specific artifact publishing (take 2) thanks to those trying out the release candidates, reporting issues, and sending us bug fixes eed3si9n.com/sbt-2.0.0-RC15 #Scala

happy pride!

👩‍🔬 released sbt 2.0.0-RC14, featuring bug fixes - fixes Scala Native publishing - fixes backtick-quoted project handling - fixes jrt URL handling in console - removal of Zero Allocation Hashing deps and more eed3si9n.com/sbt-2.0.0-RC14 #Scala

wrote 'hashing bakeoff' based on the microbenchmark of hashing 2048 byte array and 1MB file, handrolled XXHash64 out-performed the FarmHash (ZAHa) in the array case, as well as SHA1 or SHA256 hash in the file case eed3si9n.com/hashing-bake... #Scala

released treehugger.scala 0.5.0, featuring Scala 3 cross building and thread-safety bug fix, both of which were contributed I've also put a fresh coat of paint on the docs by switching from Pamflet to mdoc + mdBook eed3si9n.com/treehugger/ #Scala

'Dependabot version updates now support the sbt ecosystem' github.blog/changelog/20... #Scala

👩‍🔬 released sbt 2.0.0-RC13, featuring bug fixes: - fixes build.sbt loading from subdirs - fixes cache and incremental compilation interference - fixes incremental test with arguments - atomic file writing and copying - execution log, to debug caching issues eed3si9n.com/sbt-2.0.0-RC13 #Scala

as a treat to a work travel, I got myself a paperback of 'Slow Gods' (2025) by Claire North I've just read part 1 so far, but I'm enjoying it. I think of 'Alien' as what if 'Star Wars' was real. viable space travel would be so risky, it would be a working class thing.

sbt-github-actions 0.30.0 is published github.com/sbt/sbt-gith... #Scala

there's a draft SIP proposal by Oron Port to introduce 'SIP-80: Target-Typed Companion Shorthand' to #Scala ```scala val s = Shape(.Circle, .Red) ``` github.com/scala/improv...

I published a diffable merkle tree implementation for this specific work: github.com/indoorvivant...

I usually find overbaking more problematic for slow tasks. In Scala Native, I experimented with a custom merkle tree hashing of the config to provide detailed feedback about why exactly overbaking occurs: github.com/scala-native... Wonder if something like this (but more generic) can be in sbt 2?

underbake (v.), underbaked, underbaking When a cached task fails to invalidate because of insufficient inputs, leading to an invalid result, we can say that the task is underbaked. In the context of incremental compilation, we call it under-compilation. www.scala-sbt.org/2.x/docs/en/...

released sbt 1.12.11, rolling back eviction error in `Test` eed3si9n.com/sbt-1.12.11 #Scala

released sbt 1.12.10, featuring - update to log4j 2.25.4, fixing CVE-2026-34477, CVE-2026-34478, CVE-2026-34479, and CVE-2026-34480 - eviction error in Test configuration, backported from sbt 2.x eed3si9n.com/sbt-1.12.10 #Scala

wrote a blog post 'shutting down the goldmine' I sent in a pull request to remove sbt/sbt from Gittensor effective immediately eed3si9n.com/shutting-dow... #Scala

released tree-sitter-scala 0.25.1 and 0.26.0, featuring - leading infix operators - typed lambda argument for Scala 2.x - access modifier for `enum` - lambdas in braces - extends clause with multiple param lists eed3si9n.com/tree-sitter-... #Scala

The sbt 2 project has started the last mile process to lock down the 2.0.x branch. Depending on the bugs we discover, we are hopeful that a release candidate (currently 2.0.0-RC12) can graduate in a few weeks to a few months. www.scala-lang.org/blog/2026/0...

North Jersey sakura patrol

I am excited to speak at the Scala Enthusiasts Meetup on April 29 in my hometown of Boston! In my talk, we will dive into the design and engineering that enable the unique "superpowers" of Cats Effect and learn how to leverage them to build scalable applications. www.scalateams.com/events/bosto...

'Last mile towards sbt 2' A quick status report on where we are at www.scala-lang.org/blog/2026/04... #Scala

👩‍🔬 released sbt 2.0.0-RC12, featuring `.previous` expansion fix eed3si9n.com/sbt-2.0.0-RC12 #Scala

🌔🚀 released sbt 2.0.0-RC11 and 1.12.9 2.0.0-RC11 features a fix to the sandbox resolution using Coursier eed3si9n.com/sbt-2.0.0-RC11 #Scala

cross published sbt-nocomma 0.1.3 to sbt 1.x and 2.x, using sbt 2.0.0-R10 sbt-nocomma is a stupid plugin that I made in 2018 that implements comma inference in build.sbt github.com/sbt/sbt-noco... eed3si9n.com/removing-com... #Scala

cross published sbt-java-formatter 0.11.0 to sbt 1.x and 2.x sbt-java-formatter, originally written by Björn Antonsson, lets you format your Java code github.com/sbt/sbt-java... #Scala

cross published sbt-native-image 0.4.0 to sbt 1.x and 2.x sbt-native-image, originally written by @geirsson.com, lets you build GraalVM native images from your Scala code github.com/scalameta/sb... #Scala

Time to meet again 🥰 🙌 Scala Days 2026 🗓️ Conference 12 - 13 October 🛠️ Workshops 14 - 15 October 📍Berlin, Germany Looking forward to welcoming you this autumn! scala-lang.org/blog/...

👩‍🔬 sbt 2.0.0-RC10 is released! sbt 2.0 is a new version of sbt, based on Scala 3 constructs and Bazel-compatible cache system eed3si9n.com/sbt-2.0.0-RC10 #Scala

🔐 released sbt 1.12.7, featuring a security fix for CVE-2026-32948, Source dependency feature (via crafted VCS URL) leading to arbitrary code execution on Windows this was discovered and fixed by Anatolii "Toli" Kmetiuk at Scala Center, who is also a new sbt committer eed3si9n.com/sbt-1.12.7 #Scala

🚀 The Scala bytecode optimizer just got ported to Scala 3! Write nice high-level code and let the optimizer make it faster. Try it out today in Scala 3.8.3-RC3!

released sbt 1.12.6 featuring, - Coursier 2.12.25-M19 update - log4j 2.25.3 update eed3si9n.com/sbt-1.12.6 #Scala

released tree-sitter-scala 0.24.1 and 0.25.0 featuring - `into` soft modifier - applied constructor type - `tracked` soft modifier - given with type parameters - anonymous `using` parameters eed3si9n.com/tree-sitter-... #Scala

🧪 Code coverage is a key part of maintaining high-quality Scala projects. We've recently made progress on making Scoverage more robust, expanding the way we test it, discovering and fixing new issues. Read more:

The Typelevel Foundation was determined to be a 501(c)(3) public charity! This is a testament to the intellectual merit and educational value of our community's contributions to functional programming. Congratulations! typelevel.org/blog/charity...

The data from your Meta Ray Bans is used to train Meta's AI, which most people don't understand means that humans are looking at the most intimate details of their lives. www.svd.se/a/K8nrV4/met...

The results of the 2025 State of Rust Survey are now available! 📊 blog.rust-lang.org/2026/03/02/2...

🛠️ sbt 2 is nearing stable release - let’s migrate the plugin ecosystem together! The new sbt2-compat plugin was developed by the Scala Center to simplify cross-building sbt plugins for sbt 1 and sbt 2. Learn more on how to migrate:

released sbt 1.12.5, featuring - updated sbtn, which can relay errors when sbt server fails to start - backport of sbt runner script fixes eed3si9n.com/sbt-1.12.5 #Scala

> Their perspective was recently documented in the sbt 1.12.3 release notes “Smørrebrød - the end of Scala 2.13-3.x sandwich”. lol > Scala 3 consuming Scala 2.13 artifacts will remain supported for the foreseeable future. 👍

Just out now: @mirandaheath.website’s post about maintainer burnout, summarizing her newly published study on the topic… 1/2

spread this at work as well since not everyone checks social media for programming content

If you're interested in Scala 2 and Scala 3 compatibility, what TASTy is, and how it fits into the whole story, take a look at this blog post by Wojciech Mazur. scala-lang.org/blog/state-...

⛄ released sbt 1.12.4, featuring - an `sbt` runner script bug fix - a `scalaOrganization` bug fix eed3si9n.com/sbt-1.12.4 #Scala

Alpha School, an "AI-powered" private school that costs as much as $65k a year, is generating faulty lesson plans and stealing content from textbooks for training data www.404media.co/students-are...

祝大家新年进步, 恭喜发财, 一帆风顺, 身体健康 🧧 a prosperous and healthy Lunar New Year, to those celebrating!

👩‍🔬 sbt 2.0.0-RC9 is released! sbt 2.0 is a new version of sbt, based on Scala 3 constructs and Bazel-compatible cache system RC9 is a big change, featuring - JDK 17 + Scala 3.8.1 in metabuild - Maven BOM (Bill of Materials) usage support eed3si9n.com/sbt-2.0.0-RC9 #Scala (1/n)

💘 released sbt 1.12.3, featuring the end of Scala 2.13-3.x bilateral interoperability (aka Scala 2.13-3.x sandwich) while it's popular to discuss the topography of hot dogs and tacos, an oft overlooked sandwich is Wawa hoagie, which is cut only on one-side eed3si9n.com/sbt-1.12.3 #Scala

truly a rockstar building Apache Spark in the open. congrats all around!