these 2 derivations will be built:
  /nix/store/mcd7cs5ch7q7ck1v0hgaxyjg8dzpz39q-amp-linux-x64.drv
  /nix/store/0s64sb7m4b4qacmbdasgmbk8vkvrhhq7-amp-0.0.1786996977-g9b9e2e.drv