Unresolved dependencies for np 0.2.0 with SBT 0.13? - scala

Scala 2.10.2 and SBT 0.13
I'm trying to use the np plugin and added the following lines to ../0.13/np.sbt:
seq(npSettings:_*)
(NpKeys.defaults in (Compile, NpKeys.np)) ~= {
_.copy(org="me.lessis", version="0.1.0-SNAPSHOT")
}
and this to <home-directory>/.sbt/plugins.sbt
addSbtPlugin("me.lessis" % "np" % "0.2.0")
resolvers += Resolver.url("sbt-plugin-releases",url("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/"))(Resolver.ivyStylePatterns)
When I execute sbt run I am getting :
[info] Updating {file:/home/Projects/helloSbt/}default-310e5b...
[info] Resolving me.lessis#np;0.2.0 ...
[warn] module not found: me.lessis#np;0.2.0
[warn] ==== local: tried
[warn] /home/.ivy2/local/me.lessis/np/scala_2.10/sbt_0.12/0.2.0/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn] http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/me.lessis/np/scala_2.10/sbt_0.12/0.2.0/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/me/lessis/np_2.10_0.12/0.2.0/np-0.2.0.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: me.lessis#np;0.2.0: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Some unresolved dependencies have extra attributes. Check that these dependencies exist with the requested attributes.
[warn] me.lessis:np:0.2.0 (sbtVersion=0.12, scalaVersion=2.10)
[warn]
[trace] Stack trace suppressed: run last *:update for the full output.
[error] (*:update) sbt.ResolveException: unresolved dependency: me.lessis#np;0.2.0: not found
[error] Total time: 3 s, completed Feb 6, 2014 9:23:17 AM
What am I doing wrong ?

For scala 2.10 you have to use sbt 0.13. I tried with sbt 0.13
Open in browser link:
http://dl.bintray.com/sbt/sbt-plugin-releases/me.lessis/np/scala_2.10/
There is only:
sbt_0.13/
For scala 2.9.2 you need to use sbt 0.12
==========================
Update:
Remove global configuration from $HOME/.sbt (plugins.sbt). or make or action from fresh user account (new user never used sbt)
Create empty directory test
Go to test
Create directory project
Go to project
Create plugins.sbt with content as above in question
Go to test directory
run sbt test or other command
see output - me.lessis#np;0.2.0 should be downloaded

Use .sbt/0.13/plugins/plugins.sbt (note the 0.13/plugins in the path) or even better for quick scan of the plugins installed, use .sbt/0.13/plugins/np.sbt so it's clear from the file name(s) about the plugins.
Please also note that from the question it appears that you're using SBT 0.12:
me.lessis:np:0.2.0 (sbtVersion=0.12, scalaVersion=2.10)
Add project/build.properties under helloSbt with the following line to have 0.13 be in use:
sbt.version=0.13.1

Related

Why can't sbt resolve OpenIMAJ dependency?

Here is the build.sbt I use in a project:
name := "FaceReg"
version := "1.0"
libraryDependencies += "org.openimaj" % "image-processing" % "1.2.1"
While updateing the project, sbt reports UNRESOLVED DEPENDENCIES:
[info] Resolving org.openimaj#image-processing;1.2.1 ...
[warn] module not found: org.openimaj#image-processing;1.2.1
[warn] ==== local: tried
[warn] /Users/jacek/.ivy2/local/org.openimaj/image-processing/1.2.1/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/org/openimaj/image-processing/1.2.1/image-processing-1.2.1.pom
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.openimaj#image-processing;1.2.1: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[trace] Stack trace suppressed: run last *:update for the full output.
[error] (*:update) sbt.ResolveException: unresolved dependency: org.openimaj#image-processing;1.2.1: not found
What could be issue? How to solve it?
OpenImaj has its own repository and does not publish artifacts to the maven central (that's one of the few repositories consulted by sbt by default).
Add the following resolvers to build.sbt to have the dependency resolved properly and you will be fine:
resolvers += "OpenIMAJ maven releases repository" at "http://maven.openimaj.org"
resolvers += "OpenIMAJ maven snapshots repository" at "http://snapshots.openimaj.org"
Also, make sure you use only % in artifact, not %% because right now it looks like you're targeting specific Scala version in dependency and it's not what you would want for OpenImaj.

Installing ensime in existing project cannot resolve dependency

I started an android project in scala recently, I'm an emacs nerd, and I wanted to use ensime in emacs instead of IntelliJ. Per the installation instructions, and this post:
Installing Ensime for Scala Development on emacs: sbt.ResolveException: unresolved dependency: org.ensime#ensime-sbtt-cmd;0.12: not found
my ~/.sbt/plugins/plugins.sbt looks like this:
resolvers += "Sonatype releases" at "https://oss.sonatype.org/content/repositories/snapshots"
addSbtPlugin("org.ensime" % "ensime-sbt-cmd" % "0.1.2")
and my project's project/plugins.sbt looks like this:
addSbtPlugin("org.scala-sbt" % "sbt-android" % "0.7.1-SNAPSHOT")
(though I don't think that's related).
When I run sbt, the output looks like the following:
[info] Loading global plugins from /Users/jmiles/.sbt/plugins
[info] Updating {file:/Users/jmiles/.sbt/plugins/}default-bdeac8...
[info] Resolving org.ensime#ensime-sbt-cmd;0.1.2 ...
[warn] module not found: org.ensime#ensime-sbt-cmd;0.1.2
[warn] ==== typesafe-ivy-releases: tried
[warn] http://repo.typesafe.com/typesafe/ivy-releases/org.ensime/ensime-sbt-cmd/scala_2.9.2/sbt_0.12/0.1.2/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn] http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/org.ensime/ensime-sbt-cmd/scala_2.9.2/sbt_0.12/0.1.2/ivys/ivy.xml
[warn] ==== local: tried
[warn] /Users/jmiles/.ivy2/local/org.ensime/ensime-sbt-cmd/scala_2.9.2/sbt_0.12/0.1.2/ivys/ivy.xml
[warn] ==== Sonatype releases: tried
[warn] https://oss.sonatype.org/content/repositories/snapshots/org/ensime/ensime-sbt-cmd_2.9.2_0.12/0.1.2/ensime-sbt-cmd-0.1.2.pom
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/org/ensime/ensime-sbt-cmd_2.9.2_0.12/0.1.2/ensime-sbt-cmd-0.1.2.pom
[info] Resolving org.scala-sbt#precompiled-2_10_0-m7;0.12.1 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.ensime#ensime-sbt-cmd;0.1.2: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Some unresolved dependencies have extra attributes. Check that these dependencies exist with the requested attributes.
[warn] org.ensime:ensime-sbt-cmd:0.1.2 (sbtVersion=0.12, scalaVersion=2.9.2)
[warn]
sbt.ResolveException: unresolved dependency: org.ensime#ensime-sbt-cmd;0.1.2: not found
at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:214)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:122)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:121)
at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:114)
at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:114)
at sbt.IvySbt$$anonfun$withIvy$1.apply(Ivy.scala:102)
at sbt.IvySbt.liftedTree1$1(Ivy.scala:49)
(etc.)
Any help?
I get this all the time with dependencies. While I have no explanation for it, here are the common patterns that recur over and over.
Often, the code given by the plugin/library developer is wrong. When I go to their maven repository the version they have listed doesn't exist in the repository. I just update it to the right version and then boom it works. Also, for some reason some plugins work when I put them in plugins.sbt (the suggested place). While others only work if I stick them in project/build.sbt. It doesn't make sense, but as soon as I move it there it suddenly installs and runs. Combined dependency listings. If you are hacking stuff together and stick a dependency in both build.scala and build.sbt, it will throw a generic error that is completely unhelpful. Remove one or the other and suddenly it runs.
Also keep in mind that % causes a scala version to be appended to the name of it. whereas %% defines the name explicitly. Sometimes this causes errors when using % because it doesn't have a version available for that scala version. Go to the repository and enter the name of the package explicitly to fix this.
ensime 0.1.2 is only for sbt version 0.13.x. If this is a new project, you might consider using the current version of sbt. Typically you'd do this by creating project/build.properties that contains sbt.version=0.13.0

Slick for Scala compiler version 2.9.1

I am trying to install slick in to my build.sbt this way:
name := "project"
version := "1.0"
scalaVersion := "2.9.1"
libraryDependencies += "com.typesafe.slick" %% "slick" % "1.0.1"
and I am getting a an error when I am running my sbt
> run
[info] Updating {file:/home/chris/project/}project...
[info] Resolving com.typesafe.slick#slick_2.9.1;1.0.1 ...
[warn] module not found: com.typesafe.slick#slick_2.9.1;1.0.1
[warn] ==== local: tried
[warn] /home/chris/.ivy2/local/com.typesafe.slick/slick_2.9.1/1.0.1/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/com/typesafe/slick/slick_2.9.1/1.0.1/slick_2.9.1-1.0.1.pom
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: com.typesafe.slick#slick_2.9.1;1.0.1: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[trace] Stack trace suppressed: run last *:update for the full output.
[error] (*:update) sbt.ResolveException: unresolved dependency: com.typesafe.slick#slick_2.9.1;1.0.1: not found
[error] Total time: 9 s, completed Sep 12, 2013 5:09:25 PM
The url in the error is not available, my question is where can I get the code for this specific version if I cannot get it from that public url, and once I have the code where do I install it to?
Slick is unfortunately not available for Scala 2.9, as it takes advantage of features available in Scala 2.10+.
You can however utilize ScalaQuery, which is the spiritual predecessor to Slick and shares much of its design and features. Stefan Zeiger, who wrote ScalaQuery, now works for us at Typesafe on Slick.

How to setup IntelliJ + Scala + specs + sbt project?

I am trying to setup an empty sbt project with specs2 for Scala (2.10) with IntelliJ (12.1) support and I am getting this error when I do sbt compile on empty project directory:
% sbt compile
Getting net.java.dev.jna jna 3.2.3 ...
:: retrieving :: org.scala-sbt#boot-jna
confs: [default]
1 artifacts copied, 0 already retrieved (838kB/32ms)
Getting org.scala-sbt sbt_2.9.1 0.11.3 ...
:: retrieving :: org.scala-sbt#boot-app
confs: [default]
37 artifacts copied, 0 already retrieved (7245kB/734ms)
Getting Scala 2.9.1 (for sbt)...
:: retrieving :: org.scala-sbt#boot-scala
confs: [default]
4 artifacts copied, 0 already retrieved (19939kB/402ms)
[info] Loading project definition from /Users/pathikrit/Projects/scalgos/project
[info] Set current project to scalgos (in build file:/Users/pathikrit/Projects/scalgos/)
Getting Scala 2.10.1 ...
:: retrieving :: org.scala-sbt#boot-scala
confs: [default]
5 artifacts copied, 0 already retrieved (24386kB/107ms)
[info] Updating {file:/Users/pathikrit/Projects/scalgos/}default-7d65e1...
[info] Resolving org.scala-lang#scala-library;2.10.1 ...
[info] Resolving org.specs2#specs2_2.10.1;1.14 ...
[warn] module not found: org.specs2#specs2_2.10.1;1.14
[warn] ==== local: tried
[warn] /Users/pathikrit/.ivy2/local/org.specs2/specs2_2.10.1/1.14/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/org/specs2/specs2_2.10.1/1.14/specs2_2.10.1-1.14.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.specs2#specs2_2.10.1;1.14: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[error] {file:/Users/pathikrit/Projects/scalgos/}default-7d65e1/*:update: sbt.ResolveException: unresolved dependency: org.specs2#specs2_2.10.1;1.14: not found
[error] Total time: 4 s, completed Mar 25, 2013 5:11:17 PM
My build.sbt file looks like this:
name := "scalgos"
version := "0.0.1"
scalaVersion := "2.10.1"
libraryDependencies += "org.specs2" %% "specs2" % "1.14" % "test"
I installed sbt by doing brew install sbt:
% brew info sbt
sbt: stable 0.12.2, devel 0.13.0-M1
http://www.scala-sbt.org
/usr/local/Cellar/sbt/0.11.3-2 (3 files, 1.1M) *
https://github.com/mxcl/homebrew/commits/master/Library/Formula/sbt.rb
==> Caveats
You can use $SBT_OPTS to pass additional JVM options to SBT.
For convenience, this can specified in `~/.sbtconfig`.
For example:
SBT_OPTS="-XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M"
Brew says I have sbt 0.12 but when I sbt --version I get:
% sbt --version
sbt launcher version 0.11.3-2
I tried to atleast generate the IntelliJ files by putting this in my $PROJECT_DIR/projects/plugins.sbt:
resolvers += "sbt-idea-repo" at "http://mpeltonen.github.com/maven/"
addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.2.0")
But when I did sbt gen-idea, I got this error:
% sbt gen-idea
[info] Loading project definition from /Users/pathikrit/Projects/scalgos/project
[info] Set current project to scalgos (in build file:/Users/pathikrit/Projects/scalgos/)
[info] Trying to create an Idea module scalgos
[info] Updating {file:/Users/pathikrit/Projects/scalgos/}default-7d65e1...
[info] Resolving org.scala-lang#scala-library;2.10.1 ...
[info] Resolving org.specs2#specs2_2.10.1;1.14 ...
[warn] module not found: org.specs2#specs2_2.10.1;1.14
[warn] ==== local: tried
[warn] /Users/pathikrit/.ivy2/local/org.specs2/specs2_2.10.1/1.14/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/org/specs2/specs2_2.10.1/1.14/specs2_2.10.1-1.14.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.specs2#specs2_2.10.1;1.14: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[error] {file:/Users/pathikrit/Projects/scalgos/}default-7d65e1/*:update: sbt.ResolveException: unresolved dependency: org.specs2#specs2_2.10.1;1.14: not found
[info] Updating {file:/Users/pathikrit/Projects/scalgos/}default-7d65e1...
[info] Resolving org.scala-lang#scala-library;2.10.1 ...
[info] Resolving org.specs2#specs2_2.10.1;1.14 ...
[warn] module not found: org.specs2#specs2_2.10.1;1.14
[warn] ==== local: tried
[warn] /Users/pathikrit/.ivy2/local/org.specs2/specs2_2.10.1/1.14/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/org/specs2/specs2_2.10.1/1.14/specs2_2.10.1-1.14.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.specs2#specs2_2.10.1;1.14: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[error] {file:/Users/pathikrit/Projects/scalgos/}default-7d65e1/*:update: sbt.ResolveException: unresolved dependency: org.specs2#specs2_2.10.1;1.14: not found
[error] Failed to obtain dependency classpath
[error] java.lang.IllegalArgumentException
[error] Use 'last' for the full log.
Can someone post a sample build.sbt that would generate IntelliJ 12.1 files for Scala 2.10.1 and sbt?
I checked in my project here: https://github.com/pathikrit/scalgos
Please advise what am I doing wrong???
you can use this project i built that provides what you are looking for out of the box
Skeleton
I'm planning to upgrade the sbt config and latest and greatest libs (sbt-idea 1.3.0 and scala 2.10.1) tonight.
enjoy!
you should update sbt version to 0.12.X, create file "project/build.properties", and put "sbt.version=0.12.1"
i forked your repo and edited the sbt version, it seems work fine on my machine
https://github.com/yuanw/scalgos

Unresolved dependency SBT org.scala-sbt#sbt_2.9.1;0.12.1: not found, Play examples

I am trying to run the samples in Play 2.0 framework but when I go to run "play" or "sbt".
When I go to directory "/samples/scala/helloworld", I execute "sbt" and I obtain:
[info] Loading project definition from C:\src\Play20\samples\scala\helloworld\project
[warn] module not found: play#sbt-plugin;2.0
[warn] ==== typesafe-ivy-releases: tried
[warn] http://repo.typesafe.com/typesafe/ivy-releases/play/sbt-plugin/scala_2.9.2/sbt_0.12/2.0/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn] http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/play/sbt-plugin/scala_2.9.2/sbt_0.12/2.0/ivys/ivy.xml
[warn] ==== local: tried
[warn] C:\Users\labra\.ivy2\local\play\sbt-plugin\scala_2.9.2\sbt_0.12\2.0\ivys\ivy.xml
[warn] ==== Typesafe repository: tried
[warn] http://repo.typesafe.com/typesafe/releases/play/sbt-plugin_2.9.2_0.12/2.0/sbt-plugin-2.0.pom
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/play/sbt-plugin_2.9.2_0.12/2.0/sbt-plugin-2.0.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: play#sbt-plugin;2.0: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Some unresolved dependencies have extra attributes. Check that these dependencies exist with the requested attributes.
[warn] play:sbt-plugin:2.0 (sbtVersion=0.12, scalaVersion=2.9.2)
[warn]
sbt.ResolveException: unresolved dependency: play#sbt-plugin;2.0: not found
at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:214)
. . .
at java.lang.Thread.run(Thread.java:722)
[error] (*:update) sbt.ResolveException: unresolved dependency: play#sbt-plugin;2.0: not found
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?
[info] Loading project definition from C:\src\Play20\samples\scala\helloworld\project
[warn] module not found: play#sbt-plugin;2.0
[warn] ==== typesafe-ivy-releases: tried
[warn] http://repo.typesafe.com/typesafe/ivy-releases/play/sbt-plugin/scala_2.9.2/sbt_0.12/2.0/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn] http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/play/sbt-plugin/scala_2.9.2/sbt_0.12/2.0/ivys/ivy.xml
[warn] ==== local: tried
[warn] C:\Users\labra\.ivy2\local\play\sbt-plugin\scala_2.9.2\sbt_0.12\2.0\ivys\ivy.xml
[warn] ==== Typesafe repository: tried
[warn] http://repo.typesafe.com/typesafe/releases/play/sbt-plugin_2.9.2_0.12/2.0/sbt-plugin-2.0.pom
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/play/sbt-plugin_2.9.2_0.12/2.0/sbt-plugin-2.0.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: play#sbt-plugin;2.0: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Some unresolved dependencies have extra attributes. Check that these dependencies exist with the requested attributes.
[warn] play:sbt-plugin:2.0 (sbtVersion=0.12, scalaVersion=2.9.2)
[warn]
sbt.ResolveException: unresolved dependency: play#sbt-plugin;2.0: not found
at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:214)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:122)
. . .
at java.lang.Thread.run(Thread.java:722)
[error] (*:update) sbt.ResolveException: unresolved dependency: play#sbt-plugin;2.0: not found
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? q
I installed sbt version 12.1 from http://www.scala-sbt.org/release/docs/Getting-Started/Setup
I noticed a similar question here: https://groups.google.com/forum/?fromgroups=#!topic/simple-build-tool/DGUbWsgZiLw
In the answers, it seems to be related to the "Launcher" version of SBT, How can I know whhich is my Launcher sbt version? And how can I update it?
I also tried to compile xsbt from source but, when running "sbt build-all", I obtain:
. . .
[info] Reading library jar [C:\compi\jdk\jre\lib\rt.jar]
[error] Error: Can't read [proguard.ClassPathEntry#73abdb5e] (Can't process class [com/oracle/net/Sdp$1.class] (Unsupported version number [51.0] for class format))
[error] java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
[error] Use 'last' for the full log.
However, my problem is not to compile xsbt, but to know how can I execute "Play's examples"
When running "sbt sbt-version" in a new folder I obtain:
[info] Set current project to default-85f41b (...)
[info] 0.12.1
If you look at project/plugins.sbt, you will see that it expects play.version system property to be set:
addSbtPlugin("play" % "sbt-plugin" % Option(System.getProperty("play.version")).getOrElse("2.0"))
So, you should either provide necessary play.version property
$ sbt -Dplay.version=2.1-RC1
or simply change plugins.sbt as
addSbtPlugin("play" % "sbt-plugin" % "2.1-RC1")
For Activator 1.0 users:
You may encounter this problem when upgrading a Play project to a later version after you load the project into Activator 1.0. That is because Activator creates files in the /project directory that look like activator-...-shim.sbt. Delete those files and Activator should resolve the issue on your next compile.
I have solved the problem after switching to Play 2.1-RC1
I also had an issue with some dependencies which I solved inserting:
// The Typesafe snapshots repository
resolvers += "Typesafe Snapshots" at "http://repo.typesafe.com/typesafe/snapshots/"
in plugins.sbt
I was just following: https://github.com/playframework/Play20/wiki/Repositories
For play 2.0.2, version 2.0.2 of SBT worked just fine in my project. I changed the addSbtPlugin line in my plugins.sbt file to:
addSbtPlugin("play" % "sbt-plugin" % "2.0.2")
It should be analogous for earlier versions. As Labra already pointed out, since this version of SBT is not the latest anymore, you probably will need to add also the following resolver in order to get it:
resolvers += "Typesafe Snapshots" at "http://repo.typesafe.com/typesafe/snapshots/"
Another way of getting rid of this kind of problem is updating Play Framework for your project to the latest version if possible. This is probably the best choice in the long run as it allows you to keep your code base current.
Following Jose's answer, I made it work but with this resolver:
"Typesafe Snapshots" at "http://repo.typesafe.com/typesafe/maven-releases"