sbt unresolved dependency: scala parser combinators - scala

Question

I am trying to use scala parser combinators in my scala project.
The only .sbt file I have in my project is project/build.sbt:
libraryDependencies += "org.scala-lang.modules" %% "scala-parser-combinators" % "1.0.4"
I tried adding this line to build/project.sbt
resolvers += "Typesafe Repo" at "http://repo.typesafe.com/typesafe/releases/"
but I get the exact same error.
When I execute sbt from the terminal in the root directory of my project I obtain the following dependency error (those are the last lines before the error):
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.scala-lang.modules#scala-parser-combinators_2.10;1.0.4: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Unresolved dependencies path:
[warn] org.scala-lang.modules:scala-parser-combinators_2.10:1.0.4 (/home/simonlbc/workspace/examslenstra/project/build.sbt#L7-8)
[warn] +- default:examslenstra-build:0.1-SNAPSHOT (scalaVersion=2.10, sbtVersion=0.13)
sbt.ResolveException: unresolved dependency: org.scala-lang.modules#scala-parser-combinators_2.10;1.0.4: not found
[error] (*:update) sbt.ResolveException: unresolved dependency: org.scala-lang.modules#scala-parser-combinators_2.10;1.0.4: not found
there are several lines which are it seems attempt from sbt to resolve the plugin at several different repositories:
[warn] module not found: org.scala-lang.modules#scala-parser-combinators_2.10;1.0.4
[warn] ==== typesafe-ivy-releases: tried
[warn] https://repo.typesafe.com/typesafe/ivy-releases/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn] https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== local: tried
[warn] /home/simonlbc/.ivy2/local/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== activator-launcher-local: tried
[warn] /home/simonlbc/.activator/repository/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== activator-local: tried
[warn] /home/simonlbc/workspace/DB/DB2016/server/activator-dist-1.3.10/repository/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== typesafe-releases: tried
[warn] http://repo.typesafe.com/typesafe/releases/org/scala-lang/modules/scala-parser-combinators_2.10/1.0.4/scala-parser-combinators_2.10-1.0.4.pom
[warn] ==== typesafe-ivy-releasez: tried
[warn] http://repo.typesafe.com/typesafe/ivy-releases/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== sbt-releases-repo: tried
[warn] http://repo.typesafe.com/typesafe/ivy-releases/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== sbt-plugins-repo: tried
[warn] http://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.scala-lang.modules/scala-parser-combinators_2.10/1.0.4/ivys/ivy.xml
[warn] ==== maven-central: tried
[warn] http://repo1.maven.org/maven2/org/scala-lang/modules/scala-parser-combinators_2.10/1.0.4/scala-parser-combinators_2.10-1.0.4.pom
[warn] ==== Typesafe Repo: tried
[warn] http://repo.typesafe.com/typesafe/releases/org/scala-lang/modules/scala-parser-combinators_2.10/1.0.4/scala-parser-combinators_2.10-1.0.4.pom
To write my project/build.sbt file I followed the directive given by the github repository of the scala parser combinators.
Of course when I do not specify anything in project/build.sbt I get compile time errors from sbt which does not understand where the Parser classes source files are.
Would there be any in which I could configure project/build.sbt so that I can use Scala's parser combinators library?

Answer 1

Based on this part of the error:
[warn] Note: Unresolved dependencies path:
[warn] org.scala-lang.modules:scala-parser-combinators_2.10:1.0.4
^
It looks like you're using Scala 2.10, where parser combinators are part of the standard library. They were split from the standard library as of Scala 2.11, so the jar you're looking for doesn't exist. If you're sticking with 2.10, simply remove that dependency, you'll get it in the standard library.