I'm trying to setup Scala3 support for an existing Maven-based project that uses both Java and Scala 2.12. I've updated pom.xml and everything seems fine from maven point of view. However, when I import this project into IDEA (latest build), IDEA is searching for 'scala-library' maven artifact for Scala SDK, while the Scala3 uses 'scala3-library_3' artifact name.
It appears that IDEA simply cannot add Scala3 as SDK (automatically from maven or manually).
Any ideas on what I may be doing wrong?
See/track https://youtrack.jetbrains.com/issue/SCL-19068 for the bug in IDEA on this issue.
Related
I have sbt 0.13.16 and Scala 2.10.6 running with Intellij 2018.2.1, working with those recommended sbt and Scala settings for Odersky's coursera course on Scala (I'm guessing their automated submission grader depended on old SBT?).
When creating new sbt + scala projects, I choose the above sbt and Scala versions, then after all the dependencies have downloaded, when I right-click New -> ... I see options for Java class but nothing for Scala. I have the Scala plugin already there according to the plugin settings.
So I try to Add Framework Support after right-clicking on the project, I select Scala, but then everything is disabled except Cancel.
I looked through previous forums, found one but that seemed relevant only for git projects.
Anyone else run into this issue? Do I need to update to more recent Scala and SBT? Any help would be very appreciated.
Please check https://plugins.jetbrains.com/plugin/1347-scala/versions for a compatibility table.
You can manage plugins in IntelliJ Preferences. Your versions seem to be too old to still be supported, already. It may help to upgrade IntelliJ and then go to preferences and get the latest Scala and SBT plugins.
Everyone, thanks for your attention.
I'm using Intellij IDEA 2017.2 in windows 7, with Scala plugin installed.(I downloaded directly from the web and installed it from local disk.)
But when I wanna to add Scala sdk through "Project Structure-Global Libraries" , I clicked the menu "Scala sdk" which is shown in the picture below, it didn't appear by the popup window as expected, i.e, it didn't present anything.
So I cannot select the Scala sdk.
the picture describes the scenario
What should I do to make it work in Intellij? My scala version is 2.12.2.
Any advices will be appreciated.
Thanks for viewed and replied.I have found the problem.
It's wired. After I created a new project, I added scala sdk successfully within this project's structure.
I had the same issue with the Scala SDK selection doing nothing. (IntelliJ CE 2018.1 on macOS 10.13.2). To change my version of Scala (in this case going from 2.12 to 2.11 for Spark support), I deleted the 2.12 SDK from Global Libraries and noticed that IntelliJ could still build/run the project. So I changed the symlink it was reading the Scala library from to point to a 2.11 install. After restart IntelliJ still has no Scala SDK under Global Libraries and the button to add it still doesn't work, but it is using 2.11 which is all I needed.
I also tried Jimmy Liu's fix of creating a new Scala project but it didn't seem to have an effect.
First some context:
My aim is to use scala alongside a testing environment, preferably in an ide.
At first I installed scala (v. 2.10.1) and sbt and it worked. I used emacs and a shell.
Then I wanted to use eclipse and installed the sbt plugin. But when I tried the FlatSpec example of the scalatest website together with the scalatest lib, it did compile but 0/0 tests did run.
In intellij I tried the same example but although I gave my sdk location, the collection package wasn't found.
My problem:
I don't understand what I have to tell my ide or what I have to write (maybe files for maven or make etc.) or where I can learn all that.
My question:
What has the ide to know if I want to run a scala project?
- location of sdk, jdk, sbt, my_project, ...
- versions of scala, java etc.
What else must it know?
IntelliJ has build in support for sbt projects. My work flow is the following :
Create a project (in the shell) using sbt. Basically you have to create a build.sbt and the necessary directory structure
`src/main/scala`
`src/main/resources`
`src/test/`
The in IntelliJ just do Open -> select build.sbt.
Also check auto-import checkbox.
Everything should work after this.
NOTE: You may have to install the Scala and sbt plugin for the above to work.
Ok, I need some help in setting up a Scala project with IntelliJ, I have download and installed the project successfully, but i have had issues when it comes to installing the Scala compiler itself, WHen i go to configure a new Scalaa project and choose to set the Scala home, I choose the download Scala option and i get the following error "downloading failed, connection failed with error 404: http://www.scala.lang.org/downloads.distrib/files/scala2.10.0+RC2.tgz" i have tried downloading the things, such as primefaces and jSF through intelij, and they all work fine, any suggestions?
Download Scala manually and just select proper directory in new project window.
http://www.scala-lang.org/download/
You should be using SBT to define and build your project. Among other things, it handles retrieving the Scala compiler and libraries. IDEA is similarly self-contained as far as its Scala plug-in's internal Scala compiler is concerned. By using SBT and IDEA (see below for connecting the two), the only thing not covered is a Scala REPL for use outside of either SBT or IDEA. If you're using a Mac, Homebrew includes a Scala formula. Because SBT retrieves the Scala compiler and libraries for the version of Scala you specified, everything is self-contained.
By far the best way to build and maintain IDEA project definitions for Scala projects is with the sbt-idea plug-in for SBT. Once you install that plug-in, which is trivial, you simply use the gen-idea SBT task it provides. When your dependencies change, you run gen-idea again to update the project.
I'm having some strange behavior in the IntelliJ editor when editing scala sources. It continuously report problem of kind "cannot resolve symbol" on various Predef functions like "require" and "->".
It seems to be only an editor problem because I am able to run scala code in Intellij and compile the sources using maven.
Am I the only one having this kind of problem ?
I'm using the Intellij version 10.0.3 CE and scala plugin version 0.4.735.
Thanks.
I would recommend using the latest IntelliJ IDEA EAP together with the latest Scala Plugin. This is known to solve a lot of problems.
Please, check the project configuration guide. It's likely that you forgot to add Scala standard library to the module dependencies.