izqui
/core/main.go:17: undefined: OpenConfiguration
src/core/main.go:17: undefined: OpenConfiguration src/core/main.go:17: undefined: HOME_DIRECTORY_CONFIG src/core/main.go:22: undefined: WriteConfiguration src/core/main.go:22: undefined: HOME_DIRECTORY_CONFIG
Same problem here :(
Edit: So the problem seems to be that the file configuration.go is missing. It was deleted in the commit that added the presentation.
https://github.com/izqui/blockchain/commit/09cfe12e6025fd4598188a1a9072cf022fa52fbf here you can find the file configuration.go which was deleted before.
you can comment these,and try build again
// keypair, _ := OpenConfiguration(HOME_DIRECTORY_CONFIG)
// WriteConfiguration(HOME_DIRECTORY_CONFIG, keypair)
add this before that
var keypair *Keypair
