Booting the VM showed "line 31: compgen: command not found" from
nomarchy-installed-summary on first boot. compgen is a bash
programmable-completion builtin, and the non-interactive bash the script
gets wrapped with (via makeWrapper + patchShebangs) is compiled without
progcomp. Beyond the visible error, the battery-presence check silently
failed to the else branch, so a laptop was always reported as "desktop".
Replace `compgen -G` with a nullglob array (a shopt, always available).
The installer's identical check runs under the ISO's interactive bash, so
it was unaffected — this script is the only compgen user.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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