scala.Tuple2 doesn't exist

[lopezavila85]

Hello,

I have downloaded the code examples, SBT 0.13.9 and Scala 2.11.6. Both of them have been installed separately in a Windows 10 machine. After downloading the dependencies, which seem to be correct I get these errors:

C:\home\aall\projects\scala-examples>sbt test
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
[info] Loading project definition from C:\home\aall\projects\scala-examples\project
[info] Set current project to Programming Scala, Second Edition - Code examples (in build file:/C:/home/aall/projects/scala-examples/)
[info] Compiling 70 Scala sources and 4 Java sources to C:\home\aall\projects\scala-examples\target\scala-2.11\classes...
[error] C:\home\aall\projects\scala-examples\src\main\java\progscala2\javainterop\ScalaTuples.java:3: error: package scala does not exist
[error] import scala.Tuple2;
[error]             ^
[error] C:\home\aall\projects\scala-examples\src\main\java\progscala2\javainterop\ScalaTuples.java:7: error: cannot find symbol
[error]     Tuple2<String,Integer> stringInteger = new Tuple2<String,Integer>("one", 2);
[error]     ^
[error]   symbol:   class Tuple2
[error]   location: class ScalaTuples
[error] C:\home\aall\projects\scala-examples\src\main\java\progscala2\javainterop\ScalaTuples.java:7: error: cannot find symbol
[error]     Tuple2<String,Integer> stringInteger = new Tuple2<String,Integer>("one", 2);
[error]                                                ^
[error]   symbol:   class Tuple2
[error]   location: class ScalaTuples
[error] 3 errors
[error] (compile:compile) javac returned nonzero exit code
[error] Total time: 16 s, completed 04-ene-2016 23:15:37

It cannot find scala.Tuple2 class... At least in the latest API docs (Scala 2.11.7) the class appears:

http://www.scala-lang.org/api/current/index.html#scala.Tuple2

After this, I uninstalled the separated Scala package and removed .sbt and .ivy2 in my Windows home directory. Furthermore, I rebooted the system and executed sbt test again...the result was the same.

Maybe I have a problem with my home folder: C:\Users\Álvaro\.ivy2 (note the Á)
What can I do?

Thanks in advance.

[deanwampler]

I successfully ran a clean build on Windows 8 (in VMWare, full disclosure...). Your issue probably indicates a corrupt %HOME%/.ivy2/ repo (where the downloaded dependencies go ... to die?? ;) This can happen if the Maven .pom files are there, but not the .jar files, for some reason.

You could try deleting the whole %HOME%/.ivy2/ directory, but it will force downloading all dependencies again, including for any other project you have that uses a build tool like SBT that uses Ivy2 for dependencies. You might first try deleting %HOME%/.ivy2/cache/org.scala-lang and see if that's enough.

[lopezavila85]

Hello Dean,

I have removed just that folder, but the problem is not resolved.

In some of the folders, some older jars are appearing, is it ok? For instance, in scala-library\jars I have stored two versions:

scala-library-2.10.4.jar `` scala-library-2.11.6.jar

The same is happening in other folders, and in jline and scalap I haven't the correspoding 2.11.6 version...maybe the dependencies are not resolved correctly at all.

Any idea? Thanks.

[deanwampler]

Those look right. Make sure they aren't zero size. The `TupleN` classes are in the `scala-library` jar. The next thing I would try is rename `%HOME%/.ivy2`, so SBT creates a new version, and see if that fixes it.

[lopezavila85]

Your latest update made it possible (Scala 2.11.7 dependencies) !!! I removed again the '.ivy2' and '.sbt' folders under my home folder:

[info] Passed: Total 37, Failed 0, Errors 0, Passed 37
[success] Total time: 263 s, completed 07-ene-2016 22:49:14

Thank you so much ;)

[deanwampler]

Glad you got it working.