(executable
  (name custom_pp)
  (modules custom_pp)
  (libraries x509 asn1-combinators fmt))

(rule
  (with-stdout-to custom_pp.output (run ./custom_pp.exe)))

(rule
  (alias runtest)
  (deps (source_tree ../testcertificates))
  (action (diff custom_pp.expected custom_pp.output)))