these 4 derivations will be built:
  /nix/store/qh95hpdp1plbbvknqh51cja014dlw9h8-vendor-registry.drv
  /nix/store/prz7s0l6nq8cwwfqh6xw0ww60p5lisvr-vendor-cargo-deps.drv
  /nix/store/y1gdjnm8r6mnpy55a6ggmh8jyqsi285s-harmonia-deps-3.2.0.drv
  /nix/store/yh52g8ddkjh4c43jvyjy4112z2238m6w-harmonia-llvm-cov-3.2.0.drv