Automatic asset versioning in Lift with sbt-less/sbt-sass

build.sbt

LessKeys.filenameSuffix in Compile <<= version ("-"+_)
 
SassKeys.filenameSuffix in Compile <<= version ("-"+_)
 
buildInfoKeys := Seq[BuildInfoKey](version)
 
buildInfoPackage := "config"

index.html

<link data-lift="Style?name=styles">

plugins.sbt

addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.3.1") // https://github.com/sbt/sbt-buildinfo/

Style.scala

object Style {
  def render(xhtml:NodeSeq):NodeSeq = attr("name").map { name =>
    import config.BuildInfo.version
     <link id={name+"_css"} href={s"/css/$name-$version.css"} rel="stylesheet"></link>
  } openOr xhtml
}