[英]How to have SBT subproject with multiple Scala versions?
我有一個使用Scala 2.10的項目和一個使用Scala 2.11的項目。 它們依賴於一個可以用兩者編譯的通用項目。
lazy val foo = (project in file("foo")).dependsOn(baz).settings(
scalaVersion := "2.10.4"
)
lazy val bar = (project in file("bar")).dependsOn(baz).settings(
scalaVersion := "2.11.4"
)
lazy val baz = (project in file("baz")).settings(
crossScalaVersions := Seq("2.10.4", "2.11.4"),
scalaVersion := "2.10.4"
)
接着
$ sbt bar/update
[info] Updating {file:/home/paul/Private/test/}bar...
[info] Resolving baz#baz_2.11;0.1-SNAPSHOT ...
[warn] module not found: baz#baz_2.11;0.1-SNAPSHOT
[warn] ==== local: tried
[warn] /home/paul/.ivy2/local/baz/baz_2.11/0.1-SNAPSHOT/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/baz/baz_2.11/0.1-SNAPSHOT/baz_2.11-0.1-SNAPSHOT.pom
[info] Resolving jline#jline;2.12 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: baz#baz_2.11;0.1-SNAPSHOT: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[trace] Stack trace suppressed: run last bar/*:update for the full output.
[error] (bar/*:update) sbt.ResolveException: unresolved dependency: baz#baz_2.11;0.1-SNAPSHOT: not found
[error] Total time: 1 s, completed Jan 13, 2015 11:42:51 AM
我怎么能有baz
通過這兩個項目使用嗎?
Yevgeniy Mordovkin建議的解決方案,在baz項目中聲明crossPaths := false
,有效。
你可能做的另一件事是在命令之前加上一個+
: sbt '+ bar/update'
。 這將為所有聲明的Scala版本構建baz 。
我為此創建了一個SBT插件 。
項目/ plugins.sbt
resolvers += Resolver.sonatypeRepo("releases")
addSbtPlugin("com.lucidchart" % "sbt-cross" % "1.0")
build.sbt
lazy val foo = (project in file("foo")).dependsOn(baz_2_10).settings(
scalaVersion := "2.10.4"
)
lazy val bar = (project in file("bar")).dependsOn(baz_2_11).settings(
scalaVersion := "2.11.5"
)
lazy val baz = (project in file("baz")).cross
lazy val baz_2_10 = baz("2.10.4")
lazy val baz_2_11 = baz("2.11.5")
它需要更多行,但現在一切都按預期編譯: sbt foo/compile
工作, sbt bar/compile
工作。
您不必記住唯一命令,您沒有來自crossPath := false
,並且與++
不同,這是可並行化的: sbt compile
將同時編譯具有正確Scala版本的foo
, bar
和baz
。
我有類似的設置,並得到它的工作:
lazy val baz = (project in file("baz")).settings(
crossScalaVersions := Seq("2.10.4", "2.11.4")
)
lazy val bar = (project in file("bar")).dependsOn(baz).settings(
scalaVersion := "2.10.4"
)
lazy val foo = (project in file("foo")).dependsOn(baz).settings(
scalaVersion := "2.11.4"
)
和建設
sbt '++ 2.10.4 baz/compile' 'bar/compile' '++ 2.11.4 baz/compile' 'foo/compile'
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