nixpkgs.config.allowUnfree in the system module (covers the live ISO
via useGlobalPkgs and every mkFlake machine) plus the two explicit
`import nixpkgs` sites (repo + lib.nix) so the standalone HM desktop
sees the same package set. Unblocks claude-code for the menu system's
ask-Claude module, vendor drivers, etc. Opt out with
`nixpkgs.config = lib.mkForce { allowUnfree = false; }`.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
c1781f45ca