these 2 derivations will be built:
  /nix/store/4b6qis9n6v6assykvv54h47q1rgmi8df-amp-linux-x64.drv
  /nix/store/n0zyjgwqk5ilvsw0fwmwgdb27fxsj9ci-amp-0.0.1786752172-g5bf5f5.drv