these 5 derivations will be built:
  /nix/store/p42gw8wvl685pjgpnzz2q74jrhxiy5am-dwarf-fortress-base-env-0.47.05.drv
  /nix/store/xmssijp2c0f5zqr102aic2z0r4rhdr13-dwarf-fortress-config.drv
  /nix/store/v309v1q131ihkk3dqwxcf52v7258h9jb-dwarf-fortress-env-0.47.05.drv
  /nix/store/hny4nrz26qmp8nwxfspryv7375rc27xm-dwarf-fortress-init.drv
  /nix/store/2cgg7dr49jm344j3by275l22f98wv6mw-dwarf-fortress-0.47.05.drv