these 3 derivations will be built:
  /nix/store/x9j3c7366dfx3fnizx95zn0sh2p2ixxv-eca-native-linux-amd64.zip.drv
  /nix/store/d925jyb80h653mmnzif7rsmdsyx3gh5w-eca-0.163.1.drv
  /nix/store/2b0h0dv50y164vipgp1pgrcjbzqadqx7-check-eca.drv