these 2 derivations will be built:
  /nix/store/i2d80dfxhqfb3kapb71fhc2g71mq4bkk-eca-native-linux-aarch64.zip.drv
  /nix/store/q4a10dsgz4if8wl3pip43vq98awqkwx8-eca-0.157.2.drv