| option('check_backend', type: 'combo', choices: ['auto', 'linux', 'unix'], | |
| description: 'Check for dependencies needed for a specific backend (default: autodetect backend)') | |
| option('bash_completion', type: 'string', value: 'yes', | |
| description: 'Directory to install Bash completion files (or "yes" for default directory, "no" to disable installation') |