From this forum thread: https://www.eclipse.org/forums/index.php/m/1841093/#msg_1841093 There are some inconsistencies between the Hawk EOL dialect and plain EOL, in that we do not support `packageName::typeName`, but we do support `packageURI::typeName`. It shouldn't be too hard to support this option as well, even if it's slightly less efficient as we do not have a straight index from the package name to the metamodel (package names do not have to be unique).