haskell-backend/pom.xml: compatibility with Windows WSL2
<exec executable="stack" dir="${project.basedir}/src/main/native/haskell-backend" failonerror="true">
<arg value="build" />
<arg value="--only-dependencies" />
+ <arg value="--allow-different-user" />
</exec>
<mkdir dir="${project.build.directory}/stack-install" />
<exec executable="stack" dir="${project.basedir}/src/main/native/haskell-backend" failonerror="true">
