run method
Runs this command.
The return value is wrapped in a Future
if necessary and returned by
CommandRunner.runCommand.
Implementation
@override
Future<void> run() async {
final installScript =
SidekickContext.sidekickPackage.root.file('tool/install.sh');
final process = start(installScript.path, nothrow: true, terminal: true);
exitCode = process.exitCode ?? -1;
}