sbt "test" command fails with a "Duplicate mappings" error

[emiaj]

Below the console output:

[play-purescript-example] $ test
[trace] Stack trace suppressed: run last web-assets-test:assets for the full output.
error Duplicate mappings:
[error] /home/jaime/developer/projects/sbt-purescript/play-example/target/web/public/test/public/main.js
[error] from
[error] /home/jaime/developer/projects/sbt-purescript/play-example/target/web/purescript/main/js/main.js
[error] /home/jaime/developer/projects/sbt-purescript/play-example/target/web/purescript/test/js/main.js
[error] Total time: 0 s, completed Nov 19, 2014 1:51:16 PM
[play-purescript-example] $ last web-assets-test:assets
java.lang.RuntimeException: Duplicate mappings:
/home/jaime/developer/projects/sbt-purescript/play-example/target/web/public/test/public/main.js
from
/home/jaime/developer/projects/sbt-purescript/play-example/target/web/purescript/main/js/main.js
/home/jaime/developer/projects/sbt-purescript/play-example/target/web/purescript/test/js/main.js
at scala.sys.package$.error(package.scala:27)
at sbt.Sync$.noDuplicateTargets(Sync.scala:67)
at sbt.Sync$$anonfun$apply$1.apply(Sync.scala:26)
at sbt.Sync$$anonfun$apply$1.apply(Sync.scala:23)
at com.typesafe.sbt.web.SbtWeb$.syncMappings(SbtWeb.scala:369)
at com.typesafe.sbt.web.SbtWeb$$anonfun$projectSettings$31.apply(SbtWeb.scala:187)
at com.typesafe.sbt.web.SbtWeb$$anonfun$projectSettings$31.apply(SbtWeb.scala:187)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)
at sbt.std.Transform$$anon$4.work(System.scala:64)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
at sbt.Execute.work(Execute.scala:244)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
error Duplicate mappings:
[error] /home/jaime/developer/projects/sbt-purescript/play-example/target/web/public/test/public/main.js
[error] from
[error] /home/jaime/developer/projects/sbt-purescript/play-example/target/web/purescript/main/js/main.js
[error] /home/jaime/developer/projects/sbt-purescript/play-example/target/web/purescript/test/js/main.js
[play-purescript-example] $

[emiaj]

Sorry, I just tested this and it still needs more work, main.js is being generated at "/target/web/public/main" instead of "/target/web/purescript/main/js"

[emiaj]

After reading the wiki, I noticed the following sentence:

"Observe the glorious result in target/web/public/main/js"

I wonder why the plugin also writes out the same main.js file into the "/target/web/purescript/main/js" directory.

That would explain why sbt complains about duplicate mappings for "main.js".

Looking forward to hear your thoughts on this.

And sorry for the messy commentaries on this PR, I am fairly new to sbt and its infrastructure.

[eamelink]

Hi, thanks for reporting this! The email notifications ended up in my junk box, just found out about it, sorry!

I'll look at this soon :)

[francisdb]

@emiaj the same bug exists at choucrifahed/sbt-elm#3, does your pull request fully fix this?