Install

go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest

Generate

protoc --go_out=. --go-grpc_out=. ./coinmeca_grpc.proto

Error Fix

error-protoc-gen-go-program-not-found-or-is-not-executable

https://stackoverflow.com/questions/57700860/