SBT 不断因不正确的附加错误而失败。我使用的是我见过很多次的构建文件的确切格式。
构建.sbt:
lazy val backend = (project in file("backend")).settings(
name := "backend",
libraryDependencies ++= (Dependencies.backend)
).dependsOn(api).aggregate(api)
依赖项.scala:
import sbt._
object Dependencies {
lazy val backend = common ++ metrics
val common = Seq(
"com.typesafe.akka" %% "akka-actor" % Version.akka,
"com.typesafe.akka" %% "akka-cluster" % Version.akka,
"org.scalanlp.breeze" %% "breeze" % Version.breeze,
"com.typesafe.akka" %% "akka-contrib" % Version.akka,
"org.scalanlp.breeze-natives" % Version.breeze,
"com.google.guava" % "guava" % "17.0"
)
val metrics = Seq("org.fusesource" % "sigar" % "1.6.4")
我不太明白 SBT 抱怨的原因
error: No implicit for Append.Values[Seq[sbt.ModuleID], Seq[Object]] found,
so Seq[Object] cannot be appended to Seq[sbt.ModuleID]
libraryDependencies ++= (Dependencies.backend)
^
简短版本(TL;DR)
有一个错误common
: 你想替换这一行
"org.scalanlp.breeze-natives" % Version.breeze,
用这条线
"org.scalanlp" %% "breeze-natives" % Version.beeze,
长版
"org.scalanlp.breeze-natives" % Version.breeze
is a GroupArtifactID
not a ModuleID
.
这导致common
成为一个Seq[Object]
代替Seq[ModuleID]
.
因此也Dependencies.backend
成为一个Seq[Object]
最终无法附加(通过++=
) to libraryDependencies
(定义为SettingKey[Seq[ModuleID]]
)因为没有可用的Append.Values[Seq[sbt.ModuleID], Seq[Object]]
.
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