**Problem**
When a val definition in build.sbt changes and the user runs `reload`, sbt crashes with `NoClassDefFoundError: $Wrap<hash>$`.
```
java.lang.NoClassDefFoundError: $Wrape8743d4f36$
at $Wrap0b8ea34d40$.$anonfun$1(build.sbt:1)
```
The workaround was to delete `project/target` directory.
**Solution**
The root cause was that imports were not included in the hash calculation when evaluating build.sbt expressions. When a val definition changes:
1. Its `$Wrap` module gets a new hash
2. Settings that reference the val get new imports pointing to the new module
3. But if the setting expression didn't change, its hash was the same
4. The old cached class was loaded with bytecode referencing the old module
Fix: Include imports in the hash calculation in `Eval.evalCommon`. Also re-enable `cleanEvalClasses` in `Load.scala` which was disabled pending this fix.
Filters out empty versions during parser construction to prevent RuntimeException when creating token parsers. Includes comprehensive test coverage for edge cases.
DependencyTreePlugin is an AutoPlugin with trigger = AllRequirements,
so it loads automatically in scripted tests without requiring explicit
plugin configuration.
Fixes#7511
The previous check used contains("scala-library") which incorrectly
matched any jar with that substring anywhere in the filename, causing
user libraries named like "my-scala-library-foo" to be misclassified
as the Scala standard library and filtered from the classpath.
Changed to use exact match (scala-library.jar) or prefix match
(scala-library-*) to only match the actual Scala library jars,
consistent with how scala-reflect is detected on line 199.
Scala 2.x has supported pipelining since 2020. The fix now allows:
- All Scala 2.x versions (pipelining supported)
- Scala 3.5.0+ (pipelining added in 3.5)
Generated-by: AI-assisted
* Add JSON output support to dependencyLicenseInfo
- Add LicenseInfo rendering object with text and JSON output
- Add dependencyLicenseInfo input task key
- Implement dependencyLicenseInfo task with JSON format support
- Supports --out option for file output
- Auto-detects JSON format from .json file extension
- Follows same pattern as dependencyTree task
Resolves#7771
When using '++version project/task', the parser now accepts project/command
patterns (e.g., 'docs/docusaurusPublishGhpages') even if the project doesn't
exist in the current state. This is achieved by adding a fallback parser
that accepts any 'project/command' pattern alongside the combinedParser.
Previously, '++2.12.19 docs/task' would fail with 'Project not found' if
'docs' project wasn't available in the current Scala version, but
'++2.12.19; docs/task' worked. Now both syntaxes work correctly.
The fix is targeted to only accept slash-delimited patterns, avoiding
interference with other parser components like the -v verbose flag.
Fixes#7574
This adds a new setting that allows users to
configure Coursier's FileCache to cache local file:// artifacts. When enabled,
artifacts from local repositories are copied to the cache directory, which is
useful for scenarios like bundling compiler artifacts in a local repo for
offline use.
Fixes#7547
**Problem**
When cross-building sbt plugins with explicit `scalaVersion` set in `build.sbt`, the `updateSbtClassifiers` task fails because it uses the launcher's Scala version instead of the appropriate Scala version for the target sbt version.
For example, with this configuration:
```scala
lazy val root = (project in file("."))
.enablePlugins(SbtPlugin)
.settings(
scalaVersion := "2.10.7", // Explicit for IDE support
crossSbtVersions := Seq("0.13.17", "1.0.0"),
)
```
Running sbt "show updateSbtClassifiers" would fail with:
Error downloading org.scala-sbt:scripted-plugin_2.12:0.13.17
It should look for scripted-plugin_2.10:0.13.17 since sbt 0.13.x uses Scala 2.10.
**Solution**
Modified sbtClassifiersTasks in Defaults.scala to:
1. Check if the project is an sbt plugin (sbtPlugin.value)
2. For plugins, derive the Scala version from pluginCrossBuild / sbtBinaryVersion using PluginCross.scalaVersionFromSbtBinaryVersion
3. For non-plugins, continue using the launcher's Scala version (original behavior)
**Problem**
When project A's dependencies changed and A was compiled in one command, project B (depending on A) would not invalidate its update cache in a subsequent command. This caused stale classpaths.
The root cause was that `depsUpdated` only checked `!stats.cached`, which only detected fresh resolves within the same command. When a dependency was served from cache (even if resolved fresh in a previous command), `cached` was marked `true`, causing incorrect cache reuse.
Debug scenario from issue:
sbt:aaa> clean
sbt:aaa> a/compile
sbt:aaa> show itTests/depsUpdated
[info] * false <-- BUG: should be true
**Solution**
Added `stamp: String` field to `UpdateStats` that records when the update was resolved. This stamp persists across commands and enables accurate cross-command comparison:
- If any dependency's stamp > our cached stamp, we re-resolve
- Falls back to `!cached` check for backwards compatibility with old caches
- Using `String` type allows future transition from timestamps to content hashes
Set window title to 'sbt <command>: <org> % <name> % <version>' when
running sbt run, runMain, bgRun, or bgRunMain.
For server-side runs, window title is set directly. For client-side runs (sbtn), window title is passed via RunInfo protocol
and set by NetworkClient.
Fixes#7586
When Java compiler generates warnings about missing annotations from
JAR files, the path format is jar:file:///C:/... which causes
InvalidPathException on Windows due to the : character.
The fix filters out jar: paths in toDocument(), similar to how fake
positions like <macro> are already filtered out. This prevents the
exception and allows compilation to continue.
Diagnostics for files inside JARs are not shown in the IDE, which is
correct behavior since they cannot be edited.
Fixes#7665
Generated-by: Cascade (AI pair programmer)
Address review feedback from eed3si9n to make it clearer that GC time
is cumulative CPU time across parallel collectors, which is why it can
exceed wall clock time.
Fixes#8002
**Problem**
consoleProject doesn't work. REPL doesn't even start.
**Solution**
I made some progress into consoleProject.
At least Scala 3.7 repl session will now start.
The problem is that compiler bridge has not implemented binding,
so we can't forward the sbt build information into the repl.
**Problems**
When running forked tests, sbt uses `Runtime.getRuntime().availableProcessors()` to determine the thread pool size, ignoring `concurrentRestrictions`. This is inconsistent with non-forked parallel tests.
**Expectations**
Users should be able to control the number of parallel test threads in forked mode, similar to how `concurrentRestrictions` works for non-forked tests.
**Notes**
Added a new setting `testForkedParallelism` that allows explicit control:
```scala
testForkedParallelism := Some(2) // Use 2 threads
testForkedParallelism := None // Use availableProcessors() (default)
```
Eviction warnings and errors were not reported for Test dependencies because
`EvictionError` only checked the Compile configuration.
This fix runs the eviction check for both Compile and Test configurations
separately, with distinct error messages:
- Compile: `found version conflict(s) in library dependencies`
- Test: `found version conflict(s) in Test dependencies`
When project loading fails in batch mode, sbt was showing an interactive
prompt asking the user to choose between retry, quit, last, or ignore.
However, in batch mode there is no interactive terminal, causing the
process to hang waiting for input that will never come.
This fix checks if we're in batch mode (Prompt.Batch) and automatically
exits with failure (equivalent to 'q' quit option) without prompting the
user. This prevents infinite retry loops on persistent errors and allows
batch mode scripts to fail fast, which is appropriate for CI/CD environments.
The interactive behavior remains unchanged for non-batch mode.
**Problem**
There's a disconnect between what is perceived to be the current
Scala version, and what sbt uses internally, and thus what it
chooses to be the default scalaVersion.
**Solution**
This displays a warning if scalaVersion setting is missing.
**Problem**
There's a disconnect between what is perceived to be the current
Scala version, and what sbt uses internally, and thus what it
chooses to be the default scalaVersion.
**Solution**
This displays a warning if scalaVersion setting is missing.
**Problem**
sbt 2.x uses crossTarget by default, but it contains Scala version
even when crossPaths is false.
**Solution**
This replaces it with the letter "u" for unspecified.
Preserve original direct dependencies (plugins) and merge with transitive dependencies
Original dependencies may include plugins that are NOT transitive dependencies of sbt
**Problem**
Compiler bridge resolution calls out to Coursier,
and it shows up on the profiler.
**Solution**
This uses sbt 2.x caching to cache the prebuilt compiler bridge binaries
to avoid calling Coursier from second time onwards.
**Problem**
During the milestone releases of Scala, e.g. Scala 2.13.0-M1,
scalaBinaryVersion by design points to 2.13.0-M1,
and also the source directory uses scala-2.13.0-M1,
but in most cases we actually want to pretend compatibility
and use scala-2.13 directory.
**Solution**
This introduces a new setting called scalaEarlyVersion,
which is the scalaBinaryVersion of the release version of milestones.
We have been calling this "partial version", but that broke
down for Scala 3, which adopted semantic versioning.
**Problem**
On IntelliJ the users are getting the hint to upgrade to -Xsource:3
style, however the supported syntax do not parse.
**Solution**
This adds -Xsource:3 to the parser. The metabuild compilation uses
-Xsource:3 since sbt 1.6.0.
**Problem**
Protobuf reading shows up as one of the bottlenecks during no-op compilation.
**Solution**
This adds a local, in-memory cache of Zinc Analysis using the timestamp
and the file size of the persisted protobuf file.
**Problem**
sha256 is currently a bottleneck for no-op compilation.
**Solution**
This adds a local, in-memory cache of sha256 hashes of binary files
using their timestamp and file size.
The size of the digest cache can be configured using localDigestCacheByteSize,
which is set to 1MB by default.
**Problem**
dependency-tree currently doesn't include Provided configuration,
because technically it isn't part of the Compile configuration,
however, Provided does become part of the Compile classpath during compilation.
**Solution**
This changes the implementation to use the internal configuration,
e.g. CompileInternal, which includes the auxilary configurations.
There's a tradeoff here since it means that we lose the tree view of
the platonic Compile configuration.
**Problem**
Scala 3.8 REPL won't work since they've split the repl artifact into another JAR.
**Solution**
This works around it by creating a yet-another sandbox configuration ScalaReplTool
(similar to ScalaTool and ScalaDocTool) and a separate scalaInstance for
console task, so when Zinc is invoked we'll be able to conjure the right array of JARs.
**Problem**
For sbt 1.x, the user is forced to pick between having a stable ID for the root project,
or having the automatic aggregation of all subprojects.
The problem becomes more pronounced for large build that frequent add/remove subprojects.
**Solution**
This implements `.autoAggregate` method on `Project`, which is implemented as
`this.aggregate(LocalAggregate)`.
At the loading time, we can automatically expand `LocalAggregate` to a list of subproject references,
after we discover all subprojects.
The `autoAggregate` will use the base directory of the subproject to pick the parent-child
relationship. For example, a root project would aggregate all subprojects,
but `bar` might aggregate only `bar/bar1` and `bar/bar2`.
**Problem**
Client-side run currently fails on JDK 8 because sbtn
creates args file even though JDK 8 does not support it.
This is likely because sbtn is compiled using GraalVM on a modern JDK.
**Solution**
This adds a new fork option canUseArgumentsFile to delegate the args file decision
to the server, and default to false if the value is missing.
This retroactively fixes sbt 2.x client-side run.
**Problem**
managedScalaInstance := false fails Java-only tests because
the test runner is based on a Scala Runner and sbt 2.x
currently derives the ScalaInstance only from update.
**Solution**
For the purpose of Java-only testing, create a dummy Scala Instance.
**Problem**
Scala 3.8.0 nightly and later in-sources the scala-library for the use by Scala 3, as opposed to using Scala-2.13-bound standard library.
This means that we will run into situations where scala-library should NOT align with scala-reflect, which might exist transitively.
**Solution**
Adjust the csrSameVersions rule for Scala 3.8 so it will only try to keep scala-library and scala3-library versions aligned.
Match
Dairus
SalesforcePeak
MkDev11
Satoshi Dev
Saber
calm
eugene yokota
xuwei-k
calm329
Francluob
aka James4u
Aleksandra Zdrojowa
Anatolii Kmetiuk
Hamza Remmal
Billy Autrey
JeanMarc van Leerdam