**Problem**
Some tests are failing.
**Solution**
* Port EvictionErrorSpec to lm-coursier
* Port EvictionWarningSpec to lm-coursier
* Port InclExclSpec to lm-coursier
* Port ZincComponentCompilerSpec to lm-coursier
* Apparently we still need lmIvy
* Add Test configuration to evictionWarningOptions
* Add Test configuration to default evictionWarningOptions
* Deduplicate eviction errors based on callers.
* Update eviction error test for semantic versioning.
* Group evictions by configuration and update test.
**Problem**
sbt always includes all transitive dependencies on the classpath.
This makes it easy to accidentally depend on transitive dependencies
without declaring them, leading to fragile builds that break when
a library changes its own dependencies.
**Solution**
Add a `dependencyMode` setting with three modes:
- DependencyMode.Transitive (default) — current behavior, all
transitive dependencies on the classpath
- DependencyMode.Direct — only declared dependencies plus
scala-library on the classpath
- DependencyMode.PlusOne — declared dependencies plus their
immediate transitive dependencies plus scala-library
Fixessbt/sbt#8942
**Problem**
The projectDescriptors key in sbt.Keys leaked Ivy classes
(ModuleRevisionId, ModuleDescriptor) through its API surface.
No external plugins use this key.
**Solution**
Remove projectDescriptors entirely. IvyDependencyPlugin now uses
its internal depMap method directly for projectResolverTask and
coursierExtraProjectsTask, eliminating unnecessary Any casts.
The descriptors field is also removed from GlobalPluginData.
Fixes sbt#8865
Step 5 of #7640 — removes the compile-time dependency on lm-ivy from main/ by creating a standalone sbt-ivy plugin module.
- Create new sbt-ivy/ subproject with IvyDependencyPlugin AutoPlugin that provides all Ivy-specific functionality (ivySbt, ivyModule, ivyConfiguration, publisher, projectDescriptors, deliver/makeIvyXml)
- Move IvyXml.scala from main/ to sbt-ivy/
- **Remove `ivyModule` from `updateTask0`**: Replace `IvySbt#Module` with `moduleSettings` + `DependencyResolution.moduleDescriptor()`, eliminating the Ivy dependency in the update path.
- **Replace direct Ivy usage in `Load.scala` and `TemplateCommandUtil`**: Use Coursier's `DependencyResolution` API for plugin bootstrapping and template resolution instead of constructing `IvySbt` instances directly.
- **Break `lm-coursier`'s dependency on `lm-ivy`**: Remove `IvySbt#Module` pattern match from `CoursierDependencyResolution`, replace `IBiblioResolver` usage in `Resolvers` with reflection, and switch build dependencies from `lmIvy` to `lmCore`.
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
When a test fails with ClassNotFoundException/IllegalAccessError, sbt
suggests a set command to change classLoaderLayeringStrategy. If the
project name contains hyphens (e.g. bug-report), the suggested command
was syntactically invalid because it parses as subtraction in Scala.
Quote project IDs using Util.quoteIfNotScalaId so the suggested
commands are valid when copy-pasted.
Fixes#5803
**Problem**
Running sbt 2.x with JDK 8 produces a confusing "server was not
detected" error because the JDK version check only required JDK 8+
and only ran in the non-native-client path.
**Solution**
Move java_version detection before the native client decision and add
checkJava17ForSbt2 that requires JDK 17+ when sbt major version >= 2.
Fixes#8813
* [2.x] fix: Fail early when sbt 2.x is run with JDK < 17 (sbtw)
Move JDK version check before native client decision in sbtw and
require JDK 17+ when build.properties declares sbt 2.x.
* [2.x] fix: Fail early when sbt 2.x is run with JDK < 17 (sbt.bat)
Move checkjava before native client decision in sbt.bat and require
JDK 17+ when build.properties declares sbt 2.x.
* [2.x] test: Add minimumJdkVersion helper and unit tests for sbtw
Extract JDK version check logic into Runner.minimumJdkVersion for
testability. Add RunnerSpec with tests for sbt 1.x, 2.x, and 3.x
version detection.
* [2.x] test: Bump fake java to JDK 17 for integration tests
The fake java script used by launcher integration tests reported
JDK 8. Since sbt 2.x now requires JDK 17+, the citest2 (sbt 2.x)
integration tests would fail with the new JDK version check.
* Simulate JDK 9+ rt.jar handling in fake java script
Instead of silently ignoring --rt-ext-dir (which causes sbt.bat
to mkdir on an empty string), properly simulate JDK 9+ behavior
by creating a temp directory with java9-rt-ext- prefix and a
dummy rt.jar inside it.
Eugene Yokota
kenji yoshida
Ali Rashid
Zainab Ali
Matthias Kurz
Dream
Daniil Sivak
bitloi