Deploying Play 2.1-SNAPSHOT based application to Heroku

An alternative is to add the Typesafe ivy-snapshots repository as a plugin resolver if you'd prefer to not use a local file repo.

In project/plugins.sbt:

resolvers += Resolver.url("Typesafe Ivy Snapshots", url("http://repo.typesafe.com/typesafe/ivy-snapshots/"))(Resolver.ivyStylePatterns)

Found the issue. I needed to declare "My Repository" as an Ivy repository by adding "Resolver.ivyStylePatterns" after the file resolver like this:

Resolver.file("My Repository", file( "repository/local/") )(Resolver.ivyStylePatterns)

The http://repo.typesafe.com/typesafe/ivy-snapshots/ seems no longer active, the following configuration works for me:

in your plugins.sbt:

//play sbt-plugin snapshotresolvers += Resolver.url("Typesafe Simple Snapshots", url("https://repo.typesafe.com/typesafe/simple/snapshots/"))(Resolver.ivyStylePatterns)//play snapshot resolvers +=  "Sonatype snapshots" at "https://oss.sonatype.org/content/repositories/snapshots/"// The Play plugin addSbtPlugin("com.typesafe.play" %% "sbt-plugin" % "2.4-SNAPSHOT")

in your build.sbt

//play snapshot resolvers +=  "Sonatype snapshots" at "https://oss.sonatype.org/content/repositories/snapshots/"