This release requires at least Eclipse 2021-06 (4.20) and is compatible with Eclipse 2022-09. Handly Xtext Integration layer supports Xtext 2.25 through 2.28. Handly requires Java 11 or later and has no operating system specific dependencies.
Note that the minimum requirements have changed in this release. Previously, Java 8, Eclipse 2018-12 (4.10) and Xtext 2.16 were sufficient.