these 4 derivations will be built:
  /nix/store/8dx7nwgyhyk3z3jj1cj9zf1c1si1j2i0-Cargo.toml.drv
  /nix/store/kf30vrq9f9x4y5lvrvgd5l87q777qqip-source.drv
  /nix/store/qj7w2hplzrb3ankgbjryfdl26mxlzn7v-iets-deps-static-aarch64-unknown-linux-musl-0.2.0.drv
  /nix/store/8vxhgjfqjc37zy94yyy6fx3dicrpwbil-iets-static-aarch64-unknown-linux-musl-0.2.0.drv