these 2 derivations will be built:
  /nix/store/l9vp7v92gars9048ab9kxcgnkrhdgvqf-amp-linux-x64.drv
  /nix/store/4fqy6s47h2vcr9jylck64vsgcmnz4jz3-amp-0.0.1786479162-g7d4a99.drv