Read and edit NixOS module options. Validate before applying. Show diffs before rebuild. Enumerate available options. Understand the NixOS declarative model deeply.
$npx -y skills add bolivian-peru/os-moda --skill system-configInstalls into the current project.
Run `npx skills use "https://github.com/bolivian-peru/os-moda" --skill "bolivian-peru/os-moda/system-config"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/bolivian-peru/os-moda" that are relevant to the current task. Run `npx skills add "https://github.com/bolivian-peru/os-moda"` and select the relevant skills, then follow their instructions.