this derivation will be built:
  /nix/store/6m17pnjkfaijqiyhkjggs4lm2v422irv-harmonia-llvm-cov-3.2.0.drv
this path will be fetched (1.4 MiB download, 3.6 MiB unpacked):
  /nix/store/hihsfr2bvvpx619c5q4rfc18p2bbxxiw-cargo-llvm-cov-0.9.0