these 2 derivations will be built:
  /nix/store/rvpq379f3j727aybwq1xr4y7zzgr2zdp-gno-2.9.1.drv
  /nix/store/5aps6sn6zzlm0fpjbfg3z0fj5zx34lrc-check-gno.drv