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December 1st, 2025, ISSUE 605

READING

Join us for the Advent of Code 2025

Advent of Code, created by Eric Wastl, is an annual event consisting of a series of Christmas-themed programming puzzles. The puzzles are released daily from December 1st through December 12th. The puzzles start easy and get harder as they go.
Scala Center (@scala_lang)
Scala Days 2025: Conference Highlights and Talk Recordings

The recordings of all the talks are now available on the Scala Days YouTube channel, and with that, here are some closing remarks, and a look ahead to the future.
Scala Center (@scala_lang)
sudori part 8: no-op compilation performance

This is a blog post on sbt 2.x development, continuing from sbt 2.x remote cache, sudori part 4, part 5 etc.
Eugene Yokota (@eed3si9n)

RELEASES

Metals v1.6.4 - Osmium

Java support improvements, Safe configuration to vscode, Diagnostics for errors in sbt files, auto add imports when copying between files, fallback for showMessageRequest, and other miscellanous improvements.
Metals Contributors
Scala 2.13.18

This release fixes several regressions from 2.13.17. It is compatible with JDKs 8 to 26.
Scala contributors
squish-find-the-brains

Nix wrapper for SBT.
Pavel
StreamGuard

High-throughput Ad-Fraud Detection API in Scala 3 + http4s.
Daniel Guchie
sbt 2.0.0-RC7

Scala 3.7.4 in the metabuild, scalaEarlyVersion setting and source directories, cleanFull command, no-op compilation performance improvements.
Eugene Yokota (@eed3si9n)

EVENTS

Scalar, Mar 26th - 27th, 2026, Warsaw, Poland

Join Scalar Conference 2026 and prepare for two exciting days of learning about functional programming with a fantastic community!
SoftwareMill (@softwaremill)

VARIA

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  1. Scala Times Issue #605

    Join us for the Advent of Code 2025. Scala Days 2025: Conference Highlights and Talk Recordings. Metals v1.6.4 - Osmium. Scalar, Mar 26th - 27th, 2026, Warsaw, Poland.

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