I am a heavy user of XProc 3.0. DFDL has a XProc step implementation, but it’s for the XProc 1.0 version of Calabash. The XProc people have a GitHub<https://github.com/xproc/3.0-steps/issues> repository where interested parties can create proposals for implementation (via issues). I am happy to create a proposal, likely based off the existing Calabash one, but with some modifications that make it more idiomatic for XProc 3.0.
Because Apache Daffodil comes with EXI, I may write a EXI parsing step as well. Regards, John Dziurłaj /d͡ʑurwaj/ Sr. Solutions Architect, The Turnout e: john@turnout.rocks<mailto:john@turnout.rocks> s: +1 (330) 714-8935 x: @dziurlaj work hours: 7am-3pm ET http://turnout.rocks<http://turnout.rocks/> @turnoutrocks