Question

我已使用Installing sbt on Linux中的说明安装了sbt。

$ sbt --version
sbt launcher version **0.13.8**

$ sbt console
[info] Starting scala interpreter...
[info] 
Welcome to Scala version 2.10.4 (OpenJDK 64-Bit Server VM, Java 1.7.0_79).

如何配置（或更新）sbt以便sbt console使用最新的Scala版本 2.11.6 ？

Answer 1

创建build.sbt文件并输入scalaVersion：

scalaVersion := "2.11.5"

在sbt console的同一目录中运行build.sbt，它将加载您指定的版本。

...:sbttest/ $ sbt console                                                                                                                                                                                                    [10:55:53]
[info] Loading global plugins from /home/.../.sbt/0.13/plugins
[info] Set current project to sbttest (in build file:/tmp/sbttest/)
[info] Starting scala interpreter...
[info] 
Welcome to Scala version 2.11.5 (OpenJDK 64-Bit Server VM, Java 1.7.0_79).
Type in expressions to have them evaluated.
Type :help for more information.

scala>

Answer 2

使用build.sbt在同一目录下运行sbt console，它将加载您指定的版本。

您也可以将build.sbt文件放在.sbt/0.13/目录中：

cat <<END > ~/.sbt/0.13/build.sbt
scalaVersion := "2.11.8"
END

然后，从其他任何地方执行sbt console将为您提供您最喜欢的scala版本。（如果您执行build.sbt的目录中存在本地sbt文件，则本地指定的版本将覆盖全局文件。

Answer 3

sbt ++ 2.11.11 console

将2.11.11更改为您选择的Scala版本。

来自sbt help ++：

++ <scala-version> [<command>]
    Changes the Scala version and runs a command.

    Sets the `scalaVersion` of all projects to <scala-version> and 
    reloads the build.
    If <command> is provided, it is then executed.

++ [<scala-version>=]<scala-home> [<command>]
    Uses the Scala installation at <scala-home> by configuring the 
    scalaHome setting for
    all projects.

    If <scala-version> is specified, it is used as the value of the 
    scalaVersion setting.
    This is important when using managed dependencies.  This version 
    will determine the
    cross-version used as well as transitive dependencies.

    If <command> is provided, it is then executed.

    See also `help +`

sbt控制台如何更新到最新的Scala版本？

3 个答案: