- - system: `"x86_64-linux"`
- - host os: `Linux 5.4.25, NixOS, 20.09pre217537.d96bd3394b7 (Nightingale)`
- - multi-user?: `yes`
- - sandbox: `yes`
- - version: `nix-env (Nix) 2.3.3`
- - channels(fusion809): `"nixos-20.09pre217537.d96bd3394b7, nixos-unstable"`
- - channels(root): `"nixos-20.09pre217537.d96bd3394b7, nixos-unstable"`
- - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos-unstable`