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let derivation connection ~name ~builder ~paths ~target =
let req = Elpegrpc.Elpe.DerivationRequest.make ~name ~builder ~paths ~target () in
let derivation connection ~name ~builder ~paths ~target ~output_hash =
let req =
match output_hash with
| None ->
Elpegrpc.Elpe.DerivationRequest.make ~name ~builder ~paths ~target ()
| Some output_hash ->
Elpegrpc.Elpe.DerivationRequest.make ~name ~builder ~paths ~target
~output_hash ()
in