these 3 derivations will be built:
  /nix/store/cx1m7awf4gqw9c162002x5917003yrcq-eca-native-linux-amd64.zip.drv
  /nix/store/imrmssfs2f3xmhy2fkx14lir7andzxh2-eca-0.161.2.drv
  /nix/store/79rlxi0x9359didjl5c7f8xj3szkha60-check-eca.drv