在...的帮助下施莱查特我终于可以找出是什么原因导致了不接受的问题print
in the hello
task.
事实证明,随着sbt-dependency-graph 插件在全局配置目录中,即~/.sbt/0.13/
(或指定的目录sbt.global.base
),sbt 无法初始化任务,因此出现错误。
$ cat plugins/sbt-dependency-graph.sbt
addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.7.4")
$ cat sbt-dependency-graph.sbt
net.virtualvoid.sbt.graph.Plugin.graphSettings
要重现,请参阅以下 sbt 会话,以print
(not println
) in build.sbt
and empty全局配置目录:
jacek:~/sandbox/so/sbt-0.13.1
$ tree
.
├── build.sbt
└── project
└── build.properties
1 directory, 2 files
jacek:~/sandbox/so/sbt-0.13.1
$ cat build.sbt
scalaVersion := "2.10.4-RC1"
lazy val hello = taskKey[Unit]("An example task")
hello := {
print("Sleeping for a sec...")
println("done.")
}
jacek:~/sandbox/so/sbt-0.13.1
$ sbt -Dsbt.global.base=/tmp/so
Getting org.scala-sbt sbt 0.13.1 ...
:: retrieving :: org.scala-sbt#boot-app
confs: [default]
43 artifacts copied, 0 already retrieved (12646kB/154ms)
Getting Scala 2.10.3 (for sbt)...
:: retrieving :: org.scala-sbt#boot-scala
confs: [default]
5 artifacts copied, 0 already retrieved (24447kB/204ms)
[info] Loading project definition from /Users/jacek/sandbox/so/sbt-0.13.1/project
[info] Updating {file:/Users/jacek/sandbox/so/sbt-0.13.1/project/}sbt-0-13-1-build...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
[info] Set current project to sbt-0-13-1 (in build file:/Users/jacek/sandbox/so/sbt-0.13.1/)
> hello
Sleeping for a sec...done.
[success] Total time: 0 s, completed Jan 4, 2014 1:35:22 PM
到目前为止它有效。
创建文件sbt-dependency-graph 插件在全局配置目录中。
jacek:/tmp/so
$ cat plugins/sbt-dependency-graph.sbt
addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.7.4")
jacek:/tmp/so
$ cat sbt-dependency-graph.sbt
net.virtualvoid.sbt.graph.Plugin.graphSettings
...and reload
.
> reload
[info] Loading global plugins from /private/tmp/so/plugins
[info] Updating {file:/tmp/so/plugins/}global-plugins...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
[info] Loading project definition from /Users/jacek/sandbox/so/sbt-0.13.1/project
[info] Updating {file:/Users/jacek/sandbox/so/sbt-0.13.1/project/}sbt-0-13-1-build...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
/Users/jacek/sandbox/so/sbt-0.13.1/build.sbt:6: error: type mismatch;
found : String("Sleeping for a sec...")
required: sbt.TaskKey[String]
print("Sleeping for a sec...")
^
[error] Type error in expression
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?
When print
更改为println
and (r)etry
,它又工作正常了。
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? r
[info] Loading global plugins from /private/tmp/so/plugins
[info] Loading project definition from /Users/jacek/sandbox/so/sbt-0.13.1/project
[info] Set current project to sbt-0-13-1 (in build file:/Users/jacek/sandbox/so/sbt-0.13.1/)
> hello
Sleeping for a sec...
done.
[success] Total time: 0 s, completed Jan 4, 2014 1:43:59 PM