Prevent sbt from publishing an automatically aggregated root project

Question

I have an sbt multi project build with two projects core and mac . I don't have a root project which aggregates them. Unfortunately sbt does create one automatically .

How can I prevent this dummy aggregate project from being published? I get something like "default-6a1ca6" apart from core and mac when I run sbt publish-local .

I am looking for something like

autoRoot := false

?

Answer 1

For sbt 1.x you can also use

lazy val root = (project in file(".")).
    aggregate(core, mac).
    settings(
        skip in publish := true
    )

See https://github.com/sbt/sbt/issues/3136

Answer 2

tl;dr Use packagedArtifacts in file(".") := Map.empty

With the latest SBT 0.13.1 and the following two files (and no other files inside the project):

build.sbt

lazy val core = project

lazy val mac = project

project/build.properties

sbt.version=0.13.1

...executing sbt publish-local gives:

$ sbt publish-local
...
[info] Set current project to root-0__multi (in build file:/Users/jacek/sandbox/so/0__multi/)
...
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/poms/mac_2.10.pom
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/jars/mac_2.10.jar
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/srcs/mac_2.10-sources.jar
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/docs/mac_2.10-javadoc.jar
[info]  published ivy to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/ivys/ivy.xml
[info]  published root-0__multi_2.10 to /Users/jacek/.ivy2/local/default/root-0__multi_2.10/0.1-SNAPSHOT/poms/root-0__multi_2.10.pom
[info]  published root-0__multi_2.10 to /Users/jacek/.ivy2/local/default/root-0__multi_2.10/0.1-SNAPSHOT/jars/root-0__multi_2.10.jar
[info]  published root-0__multi_2.10 to /Users/jacek/.ivy2/local/default/root-0__multi_2.10/0.1-SNAPSHOT/srcs/root-0__multi_2.10-sources.jar
[info]  published root-0__multi_2.10 to /Users/jacek/.ivy2/local/default/root-0__multi_2.10/0.1-SNAPSHOT/docs/root-0__multi_2.10-javadoc.jar
[info]  published ivy to /Users/jacek/.ivy2/local/default/root-0__multi_2.10/0.1-SNAPSHOT/ivys/ivy.xml
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/poms/core_2.10.pom
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/jars/core_2.10.jar
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/srcs/core_2.10-sources.jar
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/docs/core_2.10-javadoc.jar
[info]  published ivy to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/ivys/ivy.xml
[success] Total time: 2 s, completed Feb 4, 2014 1:38:28 AM

It means that by default all there projects are published.

When you however add the setting packagedArtifacts in file(".") := Map.empty to set packagedArtifacts for the current (root) project:

build.sbt

lazy val core = project

lazy val mac = project

packagedArtifacts in file(".") := Map.empty

...executing sbt publish-local gives:

$ sbt publish-local
...
[info] Set current project to root-0__multi (in build file:/Users/jacek/sandbox/so/0__multi/)
...
[info]  published ivy to /Users/jacek/.ivy2/local/default/root-0__multi_2.10/0.1-SNAPSHOT/ivys/ivy.xml
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/poms/core_2.10.pom
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/jars/core_2.10.jar
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/srcs/core_2.10-sources.jar
[info]  published core_2.10 to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/docs/core_2.10-javadoc.jar
[info]  published ivy to /Users/jacek/.ivy2/local/core/core_2.10/0.1-SNAPSHOT/ivys/ivy.xml
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/poms/mac_2.10.pom
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/jars/mac_2.10.jar
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/srcs/mac_2.10-sources.jar
[info]  published mac_2.10 to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/docs/mac_2.10-javadoc.jar
[info]  published ivy to /Users/jacek/.ivy2/local/mac/mac_2.10/0.1-SNAPSHOT/ivys/ivy.xml
[success] Total time: 1 s, completed Feb 4, 2014 1:39:34 AM

No current (root) project is published.

Answer 3

This answer is a work around: Create an explicit root project and disable publishing for it. I wish there was a simpler way, though.