these 3 derivations will be built:
  /nix/store/y8xixi4v1n8whfxmal7znj53w87dj122-ZCode-3.18.2-linux-arm64.deb.drv
  /nix/store/2zz5s73hfpwcdq0f2xi5c10q0gsykhvj-zcode-3.18.2.drv
  /nix/store/fwlfv2p33dahd21w0vhp9lxz5b9b99xv-check-zcode.drv