these 2 derivations will be built:
  /nix/store/0r9l6awn6vs8172jznzgxqhj3fs64gmq-mindwalk-0.5.0.drv
  /nix/store/rk1iip9fh67w2m1nn14my9m5wvnwc1w6-check-mindwalk.drv