These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
Ppx_sexp_conv is a PPX syntax extension that generates code for converting OCaml types to and from s-expressions, as defined in the sexplib0 library.
Ppx_sexp_conv