BindFullyQualifiedFlag ensures that each flag used in commands is bound to a key using fully qualified name which has a following form: commandName.flagName This lets us keep structure of yaml file: commandName: flagName: value.

SetupConfig defines Viper env var prefixes and type handling when inferring key value.

SetupConfigSources sets up Viper configuration sources.

SupportedExtensions returns a slice of all supported config format (as file extensions).

SyncFullyQualifiedFlag ensures that if configuration provides a value for a given cmd.flag it will be set back to the flag itself, but only if the flag was not set through CLI.

SyncFullyQualifiedFlags ensures that if configuration provide a value for any of defined flags it will be set back to the flag itself.