sbt/sbt

A relaxed chat room about sbt (the interactive build tool). Also good for sbt help: Stack Overflow, or Lightbend subscription. https://www.scala-sbt.org/support.html has advice on where to go.

Ghost

@ghost~540393fe163965c9bc2018ce

@scalasolist to sbt itself, use .jvmopts one line per arg, for launched processes you need to use fork := true and then use javaOptions ++= Seq(...)

eugene yokota

@eed3si9n

sbt commands normally inherits the jvm that sbt itself is running under

and what sam said

scalasolist

@scalasolist

@fommil thanks. .jvmopts is what I'm searching

Ghost

@ghost~540393fe163965c9bc2018ce

it even works on windows ;-)

Sukant Hajra

@shajra

@eed3si9n okay for the company, I have a small function that takes (mainTarget: ScalaTarget, others: ScalaTargets*) and it sets scalaVersion to just mainTarget, and crossScalaVersions to mainTarget +: others.

scalasolist

@scalasolist

where should I put .jvmopts?

Ghost

@ghost~540393fe163965c9bc2018ce

just in the root of your project

I also recommend using jenv to manage your version of java, and put a .java-version file beside the .jvmopts

eugene yokota

@eed3si9n

+1 on jenv

scalasolist

@scalasolist

eselect java-vm is sufficient for me

Ghost

@ghost~540393fe163965c9bc2018ce

the advantage of jenv is that it works on everybody's machine, not just yours, and you don't need to remember to change it

eugene yokota

@eed3si9n

i bought a laptop recently and found that Oracle no longer has JDK 7 download available

scalasolist

@scalasolist

I had not arrived yet to the point where my programs breaks jvm compatibility

Ghost

@ghost~540393fe163965c9bc2018ce

don't use Oracle proprietary crap, use OpenJDK

scalasolist

@scalasolist

Who is responsible for adding src/main/scala-2.11 in source directories: ensime plugin or sbt defaults?

Ghost

@ghost~540393fe163965c9bc2018ce

ensime plugin won't touch that

eugene yokota

@eed3si9n

i thought IDEs do that

Ghost

@ghost~540393fe163965c9bc2018ce

but I think the sbt defaults are wrong most of the time, so I customise them for my projects. e.g. that works for a normal release, but if you use a scala milestone release or somtehing it'll be a long name

oh, you mean actually creating the directory on disk?

read the output of running sbt ensimeConfig and then hang your head in shame :-P

scalasolist

@scalasolist

if @fommil says that ensime does not touch it, I would believe him. So I would search what sbt update added cross-versions as default

Ghost

@ghost~540393fe163965c9bc2018ce

do you mean in show sourceDirectories ? yeah, that's sbt

look in Defaults.scala in sbt

eugene yokota

@eed3si9n

sbt definately scans Scala specific directories

scalasolist

@scalasolist

@fommil I had read sbt ensimeConfig and become suspicions. I had checked show sourceDirectories and found, that someone add new stuff to it

Ghost

@ghost~540393fe163965c9bc2018ce

:-)

eugene yokota

@eed3si9n

but i am not sure if the question is about the setting or mkdir

Ghost

@ghost~540393fe163965c9bc2018ce

https://github.com/fommil/sbt-sensible/blob/master/src/main/scala/SensiblePlugin.scala#L250-L257

it's about the setting

scalasolist

@scalasolist

The question is about sourceDirectories and how I could make them clean again

I'm writing my sbt config manually combining both .sbt and project/build.scala and expects no surprises from the sbt

Ghost

@ghost~540393fe163965c9bc2018ce

interesting, I can't see where I disable the default cross directories...

but that's definitely what I use to workaround the bug referenced in there

oh I think I allow the defaults plus these

scalasolist

@scalasolist

I'd read sbt release notes, there is something fishy recently added cross-building support. I'm afraid I should dive deeper to eliminate it

scalasolist

@scalasolist

@fommil JConsole shows that .jvmopts were ignored

Brian Topping

@briantopping

Hi all, does this look like anything that ought to work? this is my first time with these features:

    unmanagedResources in Compile += Def.task {
      val temp = IO.createTemporaryDirectory
      "curl --silent https://example.com/main-module/-/main-module-0.0.2.tgz" #| s"tar -xf -C$temp" !
        (unmanagedResourceDirectories in Compile) += temp
    }.taskValue

Palmer Lao

@palmerlao

I want to write a custom command that's similar to console but sets up spark. I know about initialCommands and cleanupCommands for console itself, but I was hoping for this to be separate. Could someone point me in the right direction?

scalasolist

@scalasolist

@fommil I ended with the following config

  val zeroCrossSettingsTemplate = Seq(
    unmanagedSourceDirectories := unmanagedSourceDirectories.value.filter(f => ! f.getName.startsWith("scala-")),
    managedSourceDirectories := Seq()
  )
  val zeroCrossSettings = inConfig(Compile)(zeroCrossSettingsTemplate) ++ inConfig(Test)(zeroCrossSettingsTemplate)

Brian Topping

@briantopping

Ah, it seems to look like this:

    unmanagedResources in Compile += Def.task {
      val temp = IO.createTemporaryDirectory
      val result = "curl --silent https://example.com/main-module/-/main-module-0.0.2.tgz" #| s"tar -xf -C$temp" !;
      temp
    }.value

scalasolist

@scalasolist

that looks more like managedResources

Brian Topping

@briantopping

hmm, I suppose I should explore, thanks

scalasolist

@scalasolist

unmanaged* - is what you fill with your file manager. And managed* is what you generate with a code

Brian Topping

@briantopping

gotcha ok

Ghost

@ghost~540393fe163965c9bc2018ce

@scalasolist I bet you're using a hand rolled sbt script instead of the official one, aren't you?

That doc page with the 2 line sbt launcher should be taken out the back and put out of its misery.

scalasolist

@scalasolist

I use official one. But hadn't updated it since 2013. Now as you pointed, I believe it is too old

but nevertheless -J-X works fine

ykycxzsv

@ykycxzsv

at the sbt prompt, i can type "project/task" to run a task in a specific project. "project/command" doesn't work however. how can i run a command in a specific project?

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