these 2 derivations will be built:
  /nix/store/c94r0ng38ky3cw0jhmixcyzn25dvcnbz-harmonia-deps-3.2.0.drv
  /nix/store/q98j95npd4xyqngzb3kyf3bwa8b853f8-harmonia-llvm-cov-3.2.0.drv