these 4 derivations will be built:
  /nix/store/xcgjv6yyci125dnhmrsj1qid65il9h83-system-units.drv
  /nix/store/m1ylg18s252sbbww5skgwvi867ssqwqs-etc.drv
  /nix/store/hq9j6z8gwz86hing0f95pwb3il3877b3-activate.drv
  /nix/store/rfsjqyzzy1dbia896rpadvrrcgiwlbhi-nixos-system-marvin-26.11.19800101.17de0b9.drv