Windows Tests on AppVeyor with SBT

For SBT Native Packager we rely on travis-ci to run our tests. However travis has not yet windows support, so we have to run these tests manually, which is not nice. Lucky there’s another free-for-opensource continous integration server for windows name appveyor. How to get sbt started? The tricky part is to install sbt and let it […]

SBT AutoPlugins Tutorial

This tutorial will guide you through the process of writing your own sbt plugin. There are several reasons to do this and it’s really simple Add customized build steps to your continuous integration process Provide default settings for different environments for various projects Before you start, make sure to have sbt installed on your machine […]

SBT Native Packager – Multi Module / Assembly and Custom Formats

Lately the questions on Stackoverflow and the Issues around sbt-native-packager were often about topics concerning Multi Module Builds Aggregating multiple projects into a single native package SBT-Assembly jar Aggregate everything into a fat-jar and package this instead of each single jarfile Change Mappings Changing default mappings, remove ones you don’t need or add new ones Custom […]

From Java 7 Futures to Akka actors with Scala

This blog post will show you how a step by step transition from a „java 7 and j.u.c.Future“ based implementation to an „akka actor written in scala solution“ looks like. It will take four steps, which are Java 7 and futures Java 8 and parallel streams Scala and futures Scala and actors with the ask […]

How to add a maven-plugin jar as dependency to sbt

I want to use the jdeb library to integrate in one of my own libraries. Since it is a maven-plugin it’s packaged as a maven plugin. SBT does not resolve the jars if you just add it as a dependency. This will do the trick: "org.vafer" % "jdeb" % "1.2" artifacts (Artifact("jdeb", "jar", "jar"))"org.vafer" % "jdeb" […]