Hey Ludo,
> This might be related to recent Guile-JSON API changes, as the > ‘proc_args’ value for core-updates-core-updates above LGTM. > > This is with cuirass-0.0.1-42.d332955. You are right, the lists of 'proc_args' were not converted to vectors, making Guile-JSON unhappy. Fixed by b135a02bf22a59f5d8b916b5068961e774fb44b5. Thanks, Mathieu