haskell-backend: Build in parallel
<target>
<exec executable="stack" dir="${project.basedir}/src/main/native/haskell-backend" failonerror="true">
<arg value="build" />
+ <arg value="--only-dependencies" />
</exec>
<mkdir dir="${project.build.directory}/stack-install" />
<exec executable="stack" dir="${project.basedir}/src/main/native/haskell-backend" failonerror="true">
<arg value="install" />
+ <arg value="--ghc-options=-j" />
<arg value="--local-bin-path" />
<arg value="${project.build.directory}/stack-install" />
</exec>
