scala 如何使用自制软件更新 SBT 版本？
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How to update SBT version using homebrew?
提问by Alessio Crestani
I installed SBT v0.12.4. Now I want to update it to v0.13.x, so I have used the command
我安装了 SBT v0.12.4。现在想更新到v0.13.x，所以用了命令
brew install sbt
It says that it has correctly installed SBT 0.13.x. but if I ask on terminal the version of SBT, it says 0.12.4. How to update it?
它说它已经正确安装了 SBT 0.13.x。但是如果我在终端上询问 SBT 的版本，它会说 0.12.4。如何更新？
回答by jsuereth
There are two sbt versions:
有两个 sbt 版本：
The
sbt-launcher. This is used to download and run a particular sbt version. This is what you installed with brew. If you typesbt --versionit should tell you the version of the launcher brew installed.sbt itself (for building projects). This is controlled via a
project/build.propertiesfile by project. So one launcher can launch many versions of sbt, and is generally backwards compatible. To update this version, simple change thesbt.versionproperty inproject/build.properties.
的
sbt-launcher。这用于下载和运行特定的 sbt 版本。这是你用 brew 安装的。如果你输入sbt --version它应该告诉你安装的启动器 brew 的版本。sbt 本身（用于建筑项目）。这是通过 project
project/build.properties文件控制的。所以一个启动器可以启动多个版本的 sbt，并且通常是向后兼容的。要更新此版本，简单的变化的财产。sbt.versionproject/build.properties
回答by Greg Chabala
If you want to upgrade the version of sbt installed by homebrew, use:
如果要升级 homebrew 安装的 sbt 版本，使用：
brew upgrade sbt
You can check what version of sbt is in use with sbt about
您可以检查正在使用的 sbt 版本 sbt about
回答by boole guo
check sbt version:
检查 sbt 版本：
sbt sbtVersion
upgrade sbt version:
升级sbt版本：
brew upgrade sbt
回答by Ivan Stanislavciuc
There is an alternative sbt-launcherwith source code here paulp/sbt-extrasthat allows specifying sbt version within command line.
paulp/sbt-extras 的sbt-launcher源代码有一个替代方法，它允许在命令行中指定 sbt 版本。
Installing sbtx
安装 sbtx
brew install --HEAD paulp/extras/sbtx
Or
或者
curl -Ls https://git.io/sbt > ~/bin/sbt && chmod 0755 ~/bin/sbt
Building project with desired sbt version
使用所需的 sbt 版本构建项目
sbt -sbt-version 1.2.5 clean test
