- Deprecates the old sbt 0.12 DSL, to be removed in sbt 1.0. See below for more details.
- The `.value` method is deprecated for input tasks. Calling `.value` on an input key returns an `InputTask[A]`,
which is completely unintuitive and often results in a bug. In most cases `.evaluated` should be called,
which returns `A` by evaluating the task.
Just in case `InputTask[A]` is needed, `.inputTaskValue` method is now provided. [#2709][2709] by [@eed3si9n][@eed3si9n]
- sbt 0.13.13 renames the early command `--<command>` that was added in 0.13.1 to `early(<command>)`. This fixes the regression [#1041][1041]. For backward compatibility `--error`, `--warn`, `--info`, and `--debug` will continue to function during the 0.13 series, but it is strongly encouraged to migrate to the single hyphen options: `-error`, `-warn`, `-info`, and `-debug`. [#2742][2742] by [@eed3si9n][@eed3si9n]
- Improve `show` when key returns a `Seq` by showing the elements one per line. Disable with `-Dsbt.disable.show.seq=true`. [#2755][2755] by [@eed3si9n][@eed3si9n]
- Recycles classloaders to be anti-hostile to JIT. Disable with `-Dsbt.disable.interface.classloader.cache=true`. [#2754][2754] by [@retronym][@retronym]
### Improvements
- Adds `new` command and `templateResolverInfos`. See below for more details.
- Auto plugins can add synthetic subprojects. See below for more details.
- Supports wildcard exclusions in POMs [#1431][1431]/[sbt/ivy#22][sbt-ivy-22]/[#2731][2731] by [@jtgrabowski][@jtgrabowski]
- Adds the ability to call `aggregateProjects(..)` for the current project inside a build sbt file. [#2682][2682] by [@xuwei-k][@xuwei-k]
- Adds `.jvmopts` support to the launcher script. [sbt/sbt-launcher-package#111][111] by [@fommil][@fommil]
- Adds `.java-version` support to the Windows launcher script. [sbt/sbt-launcher-package#111][111] by [@fommil][@fommil]
- The startup log level is dropped to `-error` in script mode using `scalas`. [#840][840]/[#2746][2746] by [@eed3si9n][@eed3si9n]
- Adds `CrossVersion.patch` which sits in between `CrossVersion.binary` and `CrossVersion.full` in that it strips off any
trailing `-bin-...` suffix which is used to distinguish variant but binary compatible Scala toolchain builds. Most things
which are currently `CrossVersion.full` (eg. Scala compiler plugins, esp. macro-paradise) would be more appropriately
depended on as `CrossVersion.patch` from this release on.
### Bug fixes
- Fixes a regression in sbt 0.13.12 that wrongly reports build-level keys to be ambiguous. [#2707][2707]/[#2708][2708] by [@Duhemm][@Duhemm]
- Fixes a regression in sbt 0.13.12 that was misfiring Scala version enforcement when an alternative `scalaOrganization` is set. [#2703][2703] by [@milessabin][@milessabin]
- Fixes `Tags.ForkedTestGroup`. [#2677][2677]/[#2681][2681] by [@pauldraper][@pauldraper]
- Fixes forked tests being reported as successful when the test harness fails. [#2442][2442]/[#2722][2722]/[#2730][2730] by [@eed3si9n][@eed3si9n]/[@dwijnand][@dwijnand]
- Fixes incorrect installation path on Windows. [sbt/sbt-launcher-package#110][110] by [@dwijnand][@dwijnand]
### new command and templateResolverInfos
sbt 0.13.13 adds a `new` command, which helps create new build definitions.
The `new` command is extensible via a mechanism called the template resolver.
A template resolver pattern matches on the passed in arguments after `new`,
and if it's a match it will apply the template.
As a reference implementation, template resolver for [Giter8][g8] is provided. For instance:
sbt new eed3si9n/hello.g8
will run [eed3si9n/hello.g8][] using Giter8.
[#2705][2705] by [@eed3si9n][@eed3si9n]
### Synthetic subprojects
sbt 0.13.13 adds support for `AutoPlugin`s to define subprojects programmatically,
by overriding the `extraProjects` method:
import sbt._, Keys._
object ExtraProjectsPlugin extends AutoPlugin {
override def extraProjects: Seq[Project] =
List("foo", "bar", "baz") map generateProject
def generateProject(id: String): Project =
Project(id, file(id)).
settings(
name := id
)
}
In addition, subprojects may be derived from an existing subproject
