The Daily Kotlin
@TheDailyKotlin
1.63K subscribers
53 photos
1 video
1 file
510 links
Kotlin Chats in Telegram:
RU https://kug.community/
EN https://kug.community/en

Kotlin news and tips
Download Telegram
About
Blog
Apps
Platform
Join
The Daily Kotlin
1.63K subscribers
The Daily Kotlin
Kotlin 2.2.20-Beta2

github.com/JetBrains/kotlin/releases/tag/v2.2.20-Beta2
GitHub
Release Kotlin 2.2.20-Beta2 · JetBrains/kotlin
Changelog
Analysis API. Code Compilation

KT-78382 K2 IR lowering error when interface extends interface
KT-73201 K2 IDE: Error while evaluating expressions with local classes
KT-78164 Evaluator: &...
🔥7
1.28K viewsRuslan Ibragimov, 
The Daily Kotlin
The Daily Kotlin
Gradle 9.0 is approaching, making this an ideal time to test it: ./gradlew wrapper --gradle-version=9.0.0-rc-3 && ./gradlew wrapper The release introduces significant new features that offer something valuable for every developer. Notable changes include…
Gradle 9.0 is out

https://gradle.org/whats-new/gradle-9/
https://docs.gradle.org/current/userguide/upgrading_major_version_9.html
https://gradle.org/release-checksums/
Gradle
Gradle | What's new in Gradle 9.0.0
Gradle 9.0.0 is a new major release which incorporates many features since the version 8.0. It makes Gradle configuration cache the preferred execution mode, provides more clean and actionable error reporting, and also updates Gradle to Kotlin 2 and Groovy…
1🔥6🤔6👏4🤩2
1.41K viewsRuslan Ibragimov, 
The Daily Kotlin
Kotlin 2.2.10

Bugfix release

https://github.com/JetBrains/kotlin/releases/tag/v2.2.10
GitHub
Release Kotlin 2.2.10 · JetBrains/kotlin
Changelog
Compiler

KT-79276 Dexing fails with "Cannot read field X because is null" with 2.2.0
KT-79442 "Multiple annotations of type kotlin.coroutines.jvm.internal.DebugMetadata&q...
👍6
1.4K viewsRuslan Ibragimov, 
The Daily Kotlin
KEEP: Rich Errors, aka Error Union Types: Motivation and Rationale
GitHub
KEEP/proposals/KEEP-0441-rich-errors-motivation.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
🔥8🤔2💩2
1.35K viewsRuslan Ibragimov, 
The Daily Kotlin
Kotlin Roadmap update August 25, 2025
Kotlin Help
Kotlin roadmap | Kotlin
982 viewsRuslan Ibragimov, 
The Daily Kotlin
KEEP: Data flow-based exhaustiveness checking
(implemented in 2.2.20 under flag)
GitHub
KEEP/proposals/KEEP-0442-dfa-exhaustiveness.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
🔥8
1.04K viewsRuslan Ibragimov, 
The Daily Kotlin
KEEP: CoroutineContext context parameter in suspend functions
GitHub
KEEP/proposals/KEEP-0443-suspend-CoroutineContext-context-parameter.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
🤔3
1.14K viewsRuslan Ibragimov, 
The Daily Kotlin
KEEP: Improve compile-time constants
GitHub
KEEP/proposals/KEEP-0444-improve-compile-time-constants.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
🔥7❤1👍1
934 viewsRuslan Ibragimov, 
The Daily Kotlin
Kotlin 2.2.20-RC2

Bug fixes

https://github.com/JetBrains/kotlin/releases/tag/v2.2.20-RC2
GitHub
Release Kotlin 2.2.20-RC2 · JetBrains/kotlin
Changelog
Backend. Wasm

KT-80106 devServer in Kotlin/Wasm overwrites defaults, causing missing static paths

Compiler

KT-80285 IJ monorepo: broken compilation after 2.2.20-RC update
KT-79816 Java...
❤2👍1
969 viewsRuslan Ibragimov, 
The Daily Kotlin
Detekt 2.0.0-alpha.0

Changelog
detekt-bkbk6n4o2-detekt.vercel.app
Changelog and Migration Guide - Detekt 2.0.0 | detekt
Detekt 2.0.0 is still in alpha. While it's stable enough to use in your projects, you can expect further breaking changes before we reach a stable release.
🎉8
995 viewsRuslan Ibragimov, 
The Daily Kotlin
Kotlin 2.2.20 Released 🎉

https://blog.jetbrains.com/kotlin/2025/09/kotlin-2-2-20-released/
https://github.com/JetBrains/kotlin/releases/tag/v2.2.20
https://kotlinlang.org/docs/whatsnew2220.html
Please open Telegram to view this post
VIEW IN TELEGRAM
The JetBrains Blog
Kotlin 2.2.20 Released | The Kotlin Blog
The Kotlin 2.2.20 release is out! This version delivers important changes for web development and other improvements. Learn more!
🔥2
857 viewsRuslan Ibragimov, 
The Daily Kotlin
Design Notes: Refinement Types for Kotlin
GitHub
KEEP/notes/0006-refinement-types.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
😢3❤1
997 viewsRuslan Ibragimov, 
The Daily Kotlin
Ktor 3.3.0

https://ktor.io/changelog/3.3/
https://github.com/ktorio/ktor/releases/tag/3.3.0
Ktor Framework
WhatsNew 3.3
Kotlin Server and Client Framework for microservices, HTTP APIs, and RESTful services
❤4👍2🔥1
1.09K viewsRuslan Ibragimov, 
The Daily Kotlin
Detaching GraalVM from the Java Ecosystem Train

– Graal JIT has been discontinued
– Native Image has been discontinued

This leaves Kotlin/Native as the only option for Kotlin and Java developers to build native executables
Oracle
Detaching GraalVM from the Java Ecosystem Train
GraalVM for JDK 24 was the final version of GraalVM licensed and supported as part of Oracle Java SE products. Any entitled customers seeking patches or updates to previously released GraalVM versions should download them through My Oracle Support. Customers…
😱9🤯3😢1
1.29K viewsRuslan Ibragimov, 
The Daily Kotlin
JUnit 6 Released with support for suspend methods

So many quality of life improvements!

- Kotlin 2.2 baseline
- JSpecify added to Java APIs (correct nullability information for Java APIs then using from Kotlin)
- Contracts added to asserts, so we would have better smart casts in tests
- Support for Sequence in @TestFactory, @MethodSource, and @FieldSource

Release Notes
Improve Kotlin support #4548

I've created the issue about supporting suspend methods 6 years ago! And it's finally fixed 🎉
Please open Telegram to view this post
VIEW IN TELEGRAM
docs.junit.org
JUnit Release Notes
🎉9🔥5
1.1K viewsRuslan Ibragimov, edited  
The Daily Kotlin
Kotlin 2.2.21-RC

https://github.com/JetBrains/kotlin/releases/tag/v2.2.21-RC

kotlinx.rpc 0.10.0

https://github.com/Kotlin/kotlinx-rpc/releases/tag/0.10.0
GitHub
Release Kotlin 2.2.21-RC · JetBrains/kotlin
Changelog
Backend. Wasm

KT-81372 K/Wasm: JsException: Exception was thrown while running JavaScript code on Safari 18.2/18.3
KT-80018 K/Wasm: exceptions don't work properly in JavaScriptCore (...
🔥2
1.01K viewsRuslan Ibragimov, 
The Daily Kotlin
Kotlin 2.2.21

https://github.com/JetBrains/kotlin/releases/tag/v2.2.21

What's new in Kotlin 2.2.21 (and 2.2.20!)
GitHub
Release Kotlin 2.2.21 · JetBrains/kotlin
Changelog
Backend. Wasm

KT-81372 K/Wasm: JsException: Exception was thrown while running JavaScript code on Safari 18.2/18.3
KT-80018 K/Wasm: exceptions don't work properly in JavaScriptCore (...
746 viewsRuslan Ibragimov, edited  
The Daily Kotlin
KEEP: Explicit context arguments
GitHub
KEEP/proposals/KEEP-0448-explicit-context-arguments.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
🥰2🤯2
459 viewsRuslan Ibragimov, 
The Daily Kotlin
KSP 2.3.0

- KSP version is no longer tied to the Kotlin compiler version
- KSP1 has been deprecated

https://github.com/google/ksp/releases/tag/2.3.0
GitHub
Release 2.3.0 · google/ksp
What's Changed

KSP1 has been deprecated #2657
KSP is now independent of Kotlin Versions #2658

Full Changelog: 2.2.20-2.0.4...2.3.0
🔥7🤩2
400 viewsRuslan Ibragimov, 
The Daily Kotlin
Kotlin v2.3.0-Beta2

https://github.com/JetBrains/kotlin/releases/tag/v2.3.0-Beta2

https://kotlinlang.org/docs/whatsnew-eap.html
GitHub
Release Kotlin 2.3.0-Beta2 · JetBrains/kotlin
Changelog
Analysis API

KT-80082 K2. False positive "Cannot resolve method" for self-bounded generic with wildcard return type in Java interop

Analysis API. Code Compilation

KT-70860 K2...
328 viewsRuslan Ibragimov,