For the sbt action I'm attempting the following:

";set target := file(\"$WORKSPACE/package/deb-upstart\"); set serverLoading in Debian := com.typesafe.sbt.packager.archetypes.ServerLoader.Upstart; debian:packageBin; set target := file(\"$WORKSPACE/package/deb-systemv\"); set serverLoading in Debian := com.typesafe.sbt.packager.archtypes.ServerLoader.SystemV; debian:packageBin; set target := file(\"$WORKSPACE/package/rpm-systemd\"); rpm:packageBin"

I'm basically resetting the target directory for each package type I call for sbt-native-package plugin tasks. The trouble is that random spaces seem to be injected around the quotes. I'm guessing the sbt-plugin has some code to add some space around quotes to separate out parameters, but as you can see, the second quote isn't a closing quote. It's another opening quote that's escaped.

This command runs fine from the shell I prepended with sbt (you can checkout the project: https://github.com/bigsense/BigSense)