sbt - How to overcome "there were 1 feature warning(s); re-run with -features for details" -


i new scala, scala-ide, , play 2.1 , working way through tutorials. today noted eclipse project emitted "todolist" tutorial shows in scala-ide warning don't understand , see go away.

this answer how more information 'feature' flag warning? suggests need add...

scalacoptions ++= seq(... "-feature")

...to sbt build definition file which, thought, project/build.scala play 2.1 project. trying put in there, however...

import sbt._ import keys._ import play.project._  object applicationbuild extends build {    val appname         = "todolist"   val appversion      = "1.0-snapshot"    val appdependencies = seq(     // add project dependencies here,     jdbc,     anorm   )    val main = play.project(appname, appversion, appdependencies).settings(     // add own project settings here     scalacoptions ++= seq(... "-feature")   )  }

..., results in compile error...

[info] loading project definition /users/bobk/work/todolist/project [error] /users/bobk/work/todolist/project/build.scala:18: illegal start of simple expression [error]     scalacoptions ++= seq(... "-feature") [error]                           ^ [error] /users/bobk/work/todolist/project/build.scala:21: ')' expected '}' found. [error] } [error] ^ [error] 2 errors found [error] (compile:compile) compilation failed project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?

if want set scalacoptions in sbt build definition in play 2.1 specify , how?

try without "...". dots represented omission in other answer.


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