these 2 derivations will be built:
  /nix/store/0gmwd9s5yjybirjj9nxzh40alrjnqhhd-cargo-vendor-dir.drv
  /nix/store/f3ypn29bik47pn5mm9s0lldx5f0xv13q-flake-fmt-1.0.0.drv