these 3 derivations will be built:
  /nix/store/4rbs9sd3hbp8frn1f3qlq8da7l3qbqaa-similar-3.2.0.drv
  /nix/store/4905szydapk6v6182l3rxaaal8px11v0-cargo-vendor-dir.drv
  /nix/store/j81j6gs07f8qsagsbvz9rh1s3hsx1frl-nix-diff-0.1.0.drv