In todays (2023-04-06) “Happy Easter” release of Mustang 2.6.2 it is now also possible to build the software on Linux: it was always running and embeddable in Linux (as it is on Windows and Mac) but it now also builds there, if required. Which also fixes it’s Github action, which performs automatic tests on pull requests.

The B2G (read: EN16931) validation was improved by upgrading the CEN schematron to v1.3.9 and Mustang can now read, write and validate XRechnung 2.3 (mandatory in Germany as of August). Additionally there was also a small correction for B2G in France by being able to define when VAT collection becomes applicable (issue #309).

As always, the command line version of Mustang can be downloaded from this website.