Re: debugging Build.scala

[michael.j...@gmail.com]

Update:  I've found that adding the sbt jars: main and ivy to the dependencies in the build project seems to be enough to get started, in that I can see a Build.scala without errors (within Scala IDE), but when I try to debug (play debug), I am not hitting the breakpoint in my task.  I've tried several variations, including setting the options in the environment, and on the build.sbt settings.  No matter what I do, I cannot figure out how to debug an SBT build.

Has anybody tried to do this?  If not, how do you develop any significant plugin or deviation from a standard build?  log output?

[Josh Suereth]

You can use the sbt eclipse plugin to generate your project definition.

In the sbt console
> reload plugins
> eclipse
> reload return

Then in eclipse, import the project/ directory.  Add the local root to your build path.

Finally, if you're using one of the launchers from the sbt site, start sbt with -jvm-debug <port> as an option.   Then connect to that port in eclipse and you can debug your build.

Finally, a word of warning.   Sbt is a parallel execution engine, so be careful where you out breakpoints.   Tasks with no dependency on each other will execute on different threads, potentially.

On Apr 30, 2013 11:51 PM, <michael.j...@gmail.com> wrote:

Update:  I've found that adding the sbt jars: main and ivy to the dependencies in the build project seems to be enough to get started, in that I can see a Build.scala without errors (within Scala IDE), but when I try to debug (play debug), I am not hitting the breakpoint in my task.  I've tried several variations, including setting the options in the environment, and on the build.sbt settings.  No matter what I do, I cannot figure out how to debug an SBT build.

Has anybody tried to do this?  If not, how do you develop any significant plugin or deviation from a standard build?  log output?

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