these 2 derivations will be built:
  /nix/store/2wqm3h67w5hxg7pmkmxpsyh6b3cnr4s7-harmonia-deps-3.1.0.drv
  /nix/store/irsfh9n5zhnmzcnz4mbag30qnqsws9z0-harmonia-3.1.0.drv