totally disable publishing of non-core subprojects

[SethTisue]

a with-extreme-prejudice followup to b21b276

using code borrowed from scala/scala repo

[SethTisue]

this should avoid all the

java.lang.RuntimeException: Repository for publishing is not specified.
	at scala.sys.package$.error(package.scala:27)
	at sbt.Classpaths$$anonfun$getPublishTo$1.apply(Defaults.scala:1583)
	at sbt.Classpaths$$anonfun$getPublishTo$1.apply(Defaults.scala:1583)

stuff at e.g. https://travis-ci.org/scala/scala-parallel-collections/builds/213142948

[dwijnand]

LGTM.

Here's what I've built up over time, in a similar vein:

    val noDocs    = Def.settings(sources in (Compile, doc) := Nil, publishArtifact in (Compile, packageDoc) := false)
    val noSources = Def.settings(publishArtifact in (Compile, packageSrc) := false)
    val noPackage = Def.settings(Keys.`package` := file(""), packageBin := file(""), packagedArtifacts := Map())
    val noPublish = Def.settings(
      makePom         := file(""),
      deliver         := file(""),
      deliverLocal    := file(""),
      publish         := {},
      publishLocal    := {},
      publishM2       := {},
      publishArtifact := false,
      publishTo       := Some(Resolver.file("devnull", file("/dev/null")))
    )
    val noArtifacts = Def.settings(noPackage, noPublish)

[dwijnand]

Minor/pro-tip: You can avoid having to enumerate these, as well as maintain the enumeration, by just specifying the settings at the root level:

disablePublishing

[dwijnand]

Minor/pro-tip: No need to jump in and out of .settings.

TL;DR: you could define this as

project.in(file("junit")).settings(
  disablePublishing,
  libraryDependencies += "com.novocode" % "junit-interface" % "0.11" % "test",

---

Long-winded explanation:

Individual settings (type Setting[_]) and seq of settings (type Seq[Setting[_]]) are both SettingDefinitions (the former by definition, the latter via implicit lift), and .settings is defined to take a varargs of SettingDefinition, so they can be defined next to each other.

For convenience there is also a Def.settings(ss: SettingsDefinition*): Seq[Setting[_]]

[SethTisue]

rebased, and applied Dale's suggested minor changes (thanks Dale)

[szeiger]

It would be great if sbt had support for this out of the box. Disabling publishing of a subproject is rather common and not at all well supported at the moment.

[dwijnand]

I agree. Between sbt, sbt-bintray, sbt-sonatype there's a lot of work to do just in this niche.

[SethTisue]

not to mention sbt-pgp, which is actually where these particular exceptions were coming from (and are hopefully finally fixed by #20)

[SethTisue]

I closed and released the staging repo in the Sonatype web UI. I'll come back here once the artifacts are on Maven Central and I've done a bit of testing.

[SethTisue]

> update
[info] Updating {file:/Users/tisue/tmp/2.13-latest-nightly/}root-2-13-latest-nightly...
[info] Resolving jline#jline;2.14.3 ...
[info] downloading https://repo1.maven.org/maven2/org/scala-lang/modules/scala-parallel-collections_2.13.0-pre-e2a2cba/0.1.1/scala-parallel-collections_2.13.0-pre-e2a2cba-0.1.1.jar ...
[info] 	[SUCCESSFUL ] org.scala-lang.modules#scala-parallel-collections_2.13.0-pre-e2a2cba;0.1.1!scala-parallel-collections_2.13.0-pre-e2a2cba.jar(bundle) (372ms)
[info] Done updating.
[success] Total time: 2 s, completed Mar 21, 2017 5:41:28 PM
> console
[info] Starting scala interpreter...
[info] 
Welcome to Scala 2.13.0-pre-e2a2cba (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.

scala> def foo = List(1).par.map(_ + 1).seq
<console>:11: error: value par is not a member of List[Int]
       def foo = List(1).par.map(_ + 1).seq
                         ^

scala> import scala.collection.parallel.CollectionConverters._
import scala.collection.parallel.CollectionConverters._

scala> def foo = List(1).par.map(_ + 1).seq
foo: scala.collection.immutable.Seq[Int]

scala> foo
res0: scala.collection.immutable.Seq[Int] = Vector(2)

🎉