these 2 derivations will be built:
  /nix/store/xmnnajnks5kb61pisvdq2sqfl9y4zvg1-tasks-axi-source-0.2.6.drv
  /nix/store/k3qgk6b9bscffj8iwnymggdw1md6m4ib-tasks-axi-0.2.6.drv