these 2 derivations will be built:
  /nix/store/i4pald2s45sdbf0f6m5qc6snbykcp4sp-iets-deps-riscv64-unknown-linux-gnu-0.1.0.drv
  /nix/store/v6mbqjhwl1jjg6adih7s0nf25p7dzdk2-iets-riscv64-unknown-linux-gnu-0.1.0.drv