我放置了以下行：
addSbtPlugin("org.ensime" % "ensime-sbtt-cmd" % "0.12")
进入我的~/.sbt/0.13/plugins/plugins.sbt
但是，当我尝试在项目的根目录中运行sbt时，我得到：
Loading /usr/share/sbt/bin/sbt-launch-lib.bash
[info] Loading global plugins from /home/djg/.sbt/0.13/plugins
[info] Updating {file:/home/djg/.sbt/0.13/plugins/}global-plugins...
[info] Resolving org.ensime#ensime-sbtt-cmd;0.12 ...
[warn] module not found: org.ensime#ensime-sbtt-cmd;0.12
[warn] ==== typesafe-ivy-releases: tried
[warn] http://repo.typesafe.com/typesafe/ivy-releases/org.ensime/ensime-sbtt-cmd/scala_2.10/sbt_0.13/0.12/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn] http://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.ensime/ensime-sbtt-cmd/scala_2.10/sbt_0.13/0.12/ivys/ivy.xml
[warn] ==== local: tried
[warn] /home/djg/.ivy2/local/org.ensime/ensime-sbtt-cmd/scala_2.10/sbt_0.13/0.12/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/org/ensime/ensime-sbtt-cmd_2.10_0.13/0.12/ensime-sbtt-cmd-0.12.pom
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.ensime#ensime-sbtt-cmd;0.12: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Some unresolved dependencies have extra attributes. Check that these dependencies exist with the requested attributes.
[warn] org.ensime:ensime-sbtt-cmd:0.12 (sbtVersion=0.13, scalaVersion=2.10)
[warn]
sbt.ResolveException: unresolved dependency: org.ensime#ensime-sbtt-cmd;0.12: not found
at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:213)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:122)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:121)
at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:116)
at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:116)
at sbt.IvySbt$$anonfun$withIvy$1.apply(Ivy.scala:104)
at sbt.IvySbt.sbt$IvySbt$$action$1(Ivy.scala:51)
at sbt.IvySbt$$anon$3.call(Ivy.scala:60)
at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:98)
at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:81)
at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:102)
at xsbt.boot.Using$.withResource(Using.scala:11)
at xsbt.boot.Using$.apply(Using.scala:10)
at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:62)
at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:52)
at xsbt.boot.Locks$.apply0(Locks.scala:31)
at xsbt.boot.Locks$.apply(Locks.scala:28)
at sbt.IvySbt.withDefaultLogger(Ivy.scala:60)
at sbt.IvySbt.withIvy(Ivy.scala:101)
at sbt.IvySbt.withIvy(Ivy.scala:97)
at sbt.IvySbt$Module.withModule(Ivy.scala:116)
at sbt.IvyActions$.update(IvyActions.scala:121)
at sbt.Classpaths$$anonfun$sbt$Classpaths$$work$1$1.apply(Defaults.scala:1144)
at sbt.Classpaths$$anonfun$sbt$Classpaths$$work$1$1.apply(Defaults.scala:1142)
at sbt.Classpaths$$anonfun$doWork$1$1$$anonfun$73.apply(Defaults.scala:1165)
at sbt.Classpaths$$anonfun$doWork$1$1$$anonfun$73.apply(Defaults.scala:1163)
at sbt.Tracked$$anonfun$lastOutput$1.apply(Tracked.scala:35)
at sbt.Classpaths$$anonfun$doWork$1$1.apply(Defaults.scala:1167)
at sbt.Classpaths$$anonfun$doWork$1$1.apply(Defaults.scala:1162)
at sbt.Tracked$$anonfun$inputChanged$1.apply(Tracked.scala:45)
at sbt.Classpaths$.cachedUpdate(Defaults.scala:1170)
at sbt.Classpaths$$anonfun$updateTask$1.apply(Defaults.scala:1135)
at sbt.Classpaths$$anonfun$updateTask$1.apply(Defaults.scala:1113)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)
at sbt.std.Transform$$anon$4.work(System.scala:64)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
at sbt.Execute.work(Execute.scala:244)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
[error] (*:update) sbt.ResolveException: unresolved dependency: org.ensime#ensime-sbtt-cmd;0.12: not found
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?
我猜版本号是错误的，所以我尝试用 "0.13" 和 "0.12-SNAPSHOT" 替换"0.12"，但一直得到类似的结果。
我的目标是将ensime与emacs一起使用来编辑 Scala 代码。我错过了什么？
查看该插件的构建文件：
version := "0.1.2"
正确的版本似乎是"0.1.2"，而不是"0.12"。（见这里）。
此外，您在 arifact 名称中有一个错别字：它"ensime-sbt-cmd"不是"ensime-sbtt-cmd"。
通常，sbt 应该在 oss.sonatype.org 中找到东西，即使它没有通过 Maven Central。但是，我不确定这也适用于插件，因此您可以尝试为其显式添加解析器：
resolvers +=
"Sonatype releases" at "https://oss.sonatype.org/content/repositories/releases"