these 2 derivations will be built:
  /nix/store/mxsy34ihiyhgk5khnw9dm65c104lvjfw-harmonia-deps-3.2.0.drv
  /nix/store/dq5hlbik2pc7arb98hgf97mvpqwcdq6c-harmonia-llvm-cov-3.2.0.drv