As shown in the picture, when I build scala project with sbteclipse and import to eclipse, when changing build.sbt , jars are downloaded to my computer but not to scalaProject. I do not know why. Can someone help me?
scala version: 2.11.8
sbt version: 0.13.15
stbeclipse:5.1.0
I assume that you're using the Scala IDE plugin for Eclipse, correct?
The sbteclipse SBT plugin merely provides a command to generate an Eclipse Scala project from the SBT build. Before using Eclipse, you're supposed to issue the following command (from the command line) to SBT:
sbt eclipse
This should generate the project files for your Eclipse project. After executing this command, you can open your project using Eclipse (with the Scala IDE plugin).
Note that, at present, the Scala IDE Eclipse plugin does not support SBT build files. That is, if you change your SBT build file, then Eclipse will be none the wiser, until you re-run the above command.
You might want to consider switching to IntelliJ IDEA (instead of Eclipse) which has a full-featured Scala plugin that fully supports SBT builds, including downloading any dependencies. For my money (both IDEs are free) IntelliJ is light-years ahead of Eclipse for Scala development.
Related
I have been using sbt on windows and a custom build.sbt script in conjunction with an import Chisel._ in the top-level file in order to generate Verilog from my Chisel source successfully.
I'm trying to get an IDE working on Windows to expedite Chisel development. I've gone with the Eclipse based SCALA IDE http://scala-ide.org/download/sdk.html/
I want to compile the Chisel library so that the import Chisel._ can be resolved locally, without having to go off and download the source from the repository each timeand recompile the source. When I download the Chisel-master repo from Git and include the src\main folder in my SCALA project in the SCALA IDE, I get lots of syntax errors in the Chisel SCALA files that prevent me from building the project.
Has anyone done anything like this before on Windows or have any knowledge of working with the SCALA IDE as it may just be a case of undefined symbols in the project configuration?
Not sure exactly what you did with build.sbt respect to recompile (I think it download it only the first time, then it caches it for the future). But I'm using ScalaIDE for Chisel on linux, using the default build.sbt files, maybe you can try to get it working out of the box first to help narrow down the issue.
Here are the steps I took in order to get ScalaIDE work with Chisel:
the latest Scala IDE uses 2.11.8, the current Chisel repository defaults to 2.11.7. So I had to change all the build.sbt reference to scalaVersion from 2.11.7 to 2.11.8
I used sbteclipse
https://github.com/typesafehub/sbteclipse
To create importable the workspace to setup the compilation dependencies.
Except for chiselFrontEnd. For some reason, this package is not added to the dependency. I have to Add chiselFrontEnd as a javabuildpath dependency manually (Properties/JavaBuildPath, under Projects) for my own projects.
To resolve undefined symbols, you can also add a JAR onto the project build path using Project Properties > Java Build Path > Libraries > Add External JARs...
If you are getting your JARs through Maven / SBT, they should be in:
C:\Users\<name>\.ivy2\local\edu.berkeley.cs\chisel3_2.11\jars
If you are using publish-local with chisel3, your JARs should be in
C:\Users\<name>\.ivy2\cache\edu.berkeley.cs\chisel3_2.11\jars
Note that chisel3 is compiled into one JAR, including coreMacros and chiselFrontend sub-projects
Of course, this is a more quick-and-dirty solution compared to something that can parse SBT files.
Trying to find the ScalaTest plugin for use with Eclipse Luna and Scala IDE for Eclipse 4.0.0 (aka Lithium). Currently using Milestone 2 of the Scala IDE for Eclipse Lithium plugin.
The ScalaTest plugin used to be part of the Scala IDE for Eclipse plugin (appeared on the list and you could check the box it to install--Scala IDE for Eclipse is supposed to be an ecosystem of plugins, ScalaTest being one of them). It doesn't appear to be there any more.
It's not on the list,
When I check "Installation Details" it doesn't appear either, and
Test configurations don't appear under "Run As..."
But there is mention of Luna in the ScalaTest plugin Github site for the scalatest plugin (https://github.com/scalatest/scalatest-eclipse-plugin), which is supposed to be part of the Scala IDE for Eclipse ecosystem.
The tests run fine from the SBT command line. So I know the ScalaTest jar file is in the classpath and is of a compatible version for my project. The ScalaTest jar file appears as an external jar file in my project in Eclipse, and the tests compile in Eclipse. Other Scala IDE for Eclipse functions seem to work correctly.
System Configuration:
Eclipse Version: Luna (4.4.0),
Scala IDE for Eclipse Version: Lithium 4.0.0 Milestone 2, for Luna and Scala 2.11.1 (download site http://download.scala-ide.org/sdk/lithium/e44/scala211/dev/site)
Java Version: Java 1.8_05,
Scala Version: 2.11.1,
Build Tool: SBT 0.13.5, running under Java 1.8_05,
ScalaTest Version: scalatest_2.11-2.2.0.jar (copied into the lib directory of my project)
My Eclipse project file is generated by SBT using the eclipse SBT command, and loaded into Eclipse using the standard "Import->Existing Projects Into Workspace..." method. The build.sbt file is a single line reading scalaVersion := "2.11.1".
Is there a ScalaTest plugin for Eclipse Luna and Scala IDE for Eclipse 4.0 (Lithium)? If so, where do I go about finding it?
This is a version of the Scala IDE that works with Eclipse Luna (version 4.4).
http://download.scala-ide.org/sdk/lithium/e44/scala211/dev/site
I created a new Scala project in eclipse then added a package and Scala object ,
So far so good ...
i want to add external library so i added a project folder with build.properties plugins.sbt files,and another file build.sbt in the root project.
in the terminal i compiled successfully the project with the sbt compile task.
the problem is that after sbt eclipse command the eclipse project changed from Scala project to something else.... all the packages changed to simple folders and the Scala project is ruined
scala IDE :Build id: 3.0.3-20140327-1716-Typesafe
scala version :2.10.4
sbt version:0.13.0
you can see in the image
Where did you get the eclipse command from? I'm guessing you're using sbteclipse.
I created a new Scala project in eclipse then added a package and Scala object , So far so good ...
If I understand correctly, this is exactly the opposite of what the plugin is intended to do. I think you're suppose to create a plain sbt project, and then let the plugin generate the Eclipse project.
I'm trying to use this example: https://github.com/spray/spray-template for a Spray project, however I can't figure out how to point Intellij at the dependencies downloaded via SBT.
Any suggestions?
If you're using IntelliJ version 13, you need only the Scala plug-in (which has built-in SBT support); just open the project by selecting the build.sbt file.
Use this SBT plugin to generate Intellij IDEA project files: https://github.com/mpeltonen/sbt-idea
Add SBT plugin for creating IntelliJ IDEA projects in your ~/.sbt/0.xx/plugins/build.sbt or PROJECT_DIR/project/plugins.sbt. Use gen-idea command to create an IntelliJ project and open the project in IntelliJ. That should be it.
I have recently begun exploring Scala, and have started by installing the Scala IDE in my copy of Eclipse (Indigo). I initially installed the Scala IDE for Scala 2.9, but then noticed that there was a newer release available for Scala 2.10. Installing the newer plug-in over the older one seems to have worked, but...
Scala 2.10 has deprecated the older Scala Actors in favor of Akka Actors. Thus I'm trying to add an import to my toy Scala project:
import akka.actor.Actor
This is flagged in the IDE with the error
not found: object akka
When I look at my Scala project's properties, I indeed do not see any of the akka-* jar files that are mentioned in the Akka documentation.
Do they need to be downloaded and installed separately, even though the Scala IDE plug-in installed the rest of Scala 2.10? Or have package names changed as part of integrating Akka actors in place of the older Scala Actors? (The documentation doesn't say so, but the Scala 2.10 release is fairly recent...)
No, they aren't packaged together.
The easiest way to make sure the Eclipse IDE can see your dependencies (Akka, and anything else referenced in your build.sbt file) is to let sbt do it using the sbteclipse plugin. Here's the instructions I wrote up for co-workers:
Install the "sbteclipse" plugin
This plugin will allow sbt to add the files/references that Eclipse needs to find all the dependencies that you specify in your build.sbt. Otherwise, you will be able to use the IDE, but you will seek all kinds of "object not found" errors.
Just make sure the plugin is being added in your global plugins.sbt file. This file (and it's path) may not exist so you may need to create it at the following location:
~/.sbt $ cd ~/.sbt/0.13/
~/.sbt/0.13 $ mkdir plugins
Edit/create the plugins.sbt file:
~/.sbt/0.13 $ vi plugins/plugins.sbt
then add this line (it may be the only line in the file):
addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "2.5.0")
Running sbteclipse
To use this, you just navigate to a scala project on the commandline and run the following. If you already had Eclipse open, go ahead and restart it.
/sites/ewuser (master)$ sbt eclipse
References:
How to initialize a new Scala project in sbt, Eclipse and github
Official sbteclipse plugin
The Akka artifacts are not bundled with the Scala IDE (yet), you will have to add “akka-actor_2.10” and friends to your project’s dependencies.
Download the akka for eclipse from below location
http://downloads.typesafe.com/akka/akka_2.11-2.4.1.zip?_ga=1.167921254.618585520.1450199987
extract the zip
add dependencies from the lib folder into project